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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A207136 a(n) = Sum_{k=0..n} binomial(n^2, k*(n-k)).

Table of values

n a(n)
0 1
1 2
2 6
3 74
4 2942
5 379502
6 155417946
7 200991082378
8 814134608643518
9 10305926982053248142
10 406157795399324680023006
11 49758289996116571598723737976
12 18917910771770463473290738891259546
13 22290399373603219140501180230536732389992

List of values

[1, 2, 6, 74, 2942, 379502, 155417946, 200991082378, 814134608643518, 10305926982053248142, 406157795399324680023006, 49758289996116571598723737976, 18917910771770463473290738891259546, 22290399373603219140501180230536732389992]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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