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A086852 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`0`
`2`		`2`
`3`		`4`
`4`		`10`
`5`		`40`
`6`		`230`
`7`		`1580`
`8`		`12434`
`9`		`110320`
`10`		`1090270`
`11`		`11876980`
`12`		`141373610`
`13`		`1825321016`
`14`		`25405388150`
`15`		`379158271420`
`16`		`6039817462210`
`17`		`102278890975360`
`18`		`1834691141852174`
`19`		`34752142215026180`
`20`		`693126840194499290`
`21`		`14519428780464454600`
`22`		`318705819455462421670`

[0,0,2,4,10,40,230,1580,12434,110320,1090270, 11876980,141373610,1825321016,25405388150, 379158271420,6039817462210,102278890975360, 1834691141852174,34752142215026180, 693126840194499290,14519428780464454600, 318705819455462421670]

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Last modified August 5 22:23 EDT 2024. Contains 374957 sequences. (Running on oeis4.)