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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.

A206849 a(n) = Sum_{k=0..n} binomial(n^2, k^2).

Table of values

n a(n)
0 1
1 2
2 6
3 137
4 13278
5 4098627
6 8002879629
7 66818063663192
8 1520456935214867934
9 167021181249536494996841
10 102867734705055054467692090431
11 179314863425920182637610314008444247
12 1094998941099523423274757578750950802034789

List of values

[1, 2, 6, 137, 13278, 4098627, 8002879629, 66818063663192, 1520456935214867934, 167021181249536494996841, 102867734705055054467692090431, 179314863425920182637610314008444247, 1094998941099523423274757578750950802034789]

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

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