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#21 by N. J. A. Sloane at Sun May 23 03:06:43 EDT 2021
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#20 by Stefano Spezia at Fri May 14 10:00:33 EDT 2021
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#19 by Stefano Spezia at Fri May 14 10:00:15 EDT 2021
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| COMMENTS
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Symmetrically, a(n) is also the number of relations from a set of at most n elements into an n-element set.
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#18 by Stefano Spezia at Fri May 14 09:03:10 EDT 2021
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| NAME
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a(n) is the number of relations from an n-element set into a set of at most n elementelements.
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| COMMENTS
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Symmetrically, a(n) is also the number of relations from a set of at most n elements into an n-element set.
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#17 by Stefano Spezia at Fri May 14 08:57:23 EDT 2021
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| NAME
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a(n) is the number of relations from an n-element betweenset twointo setsa Aset andof Bat suchmost that #A = n and #B <= nelement.
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#16 by Stefano Spezia at Fri May 14 06:25:58 EDT 2021
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| NAME
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a(n) is the number of relations from an n-element setbetween intotwo asets setA ofand atB mostsuch that #A = n element.and #B <= n
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#15 by Stefano Spezia at Fri May 14 06:19:38 EDT 2021
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| NAME
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a(n) is the number of relations from an n-element betweenset twointo setsa Aset andof Bat suchmost that #A = n and #B <= nelement.
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#14 by Stefano Spezia at Fri May 14 06:05:45 EDT 2021
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| NAME
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a(n) is the number of relations between two sets A and B such that #A = n and #B <= n.
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| STATUS
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proposed
editing
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#13 by Stefano Spezia at Fri May 14 05:26:12 EDT 2021
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#12 by Stefano Spezia at Fri May 14 05:23:13 EDT 2021
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Discussion
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| Fri May 14
| 05:26
| Stefano Spezia: I hope that now it is better. Thanks to everyone
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