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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.

A245242 a(n) = Sum_{k=0..n} binomial(n^2 - k^2, n*k - k^2).

Table of values

n a(n)
0 1
1 2
2 5
3 40
4 987
5 73026
6 15656191
7 9146092572
8 15579632823935
9 71399036100619112
10 916371430754269894286
11 33098484899485154272997507
12 3182514246669584511131232330210
13 875352526298195795986890973534420721
14 650999500319874632196352991280266092913655

List of values

[1, 2, 5, 40, 987, 73026, 15656191, 9146092572, 15579632823935, 71399036100619112, 916371430754269894286, 33098484899485154272997507, 3182514246669584511131232330210, 875352526298195795986890973534420721, 650999500319874632196352991280266092913655]

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

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