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1, 17, 453, 17465, 921233, 63789145, 5616599013, 613148157073, 81298838448001, 12871080897739073, 2398329378160629861, 519554377953510437129, 129472180384695112970705, 36773246580917492621295817, 11807854666147122586977709125, 4255708041349122783137436409249, 1710617624877842754809697811363969
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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2,2
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COMMENTS
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LINKS
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MAPLE
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T := proc(n) local T, k; T := proc(n, k) option remember; if n = k then 1; elif k < 2 or n < k then 0; else T(n - 1, k - 1) + (n + k - 1)^2*T(n - 1, k); end if; end proc; add(T(n, k), k = 2 .. n); end proc; seq(T(n), n = 0 .. 18);
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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