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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.

A324566 a(n) = Product_{i=0..n, j=0..n} (binomial(2*i, i) + binomial(2*j, j)).

Table of values

n a(n)
0 2
1 72
2 2709504
3 15637972132823040
4 2676716427588188879089135779840000
5 2844659827809077182003221596452154340416256794895644098560000

List of values

[2, 72, 2709504, 15637972132823040, 2676716427588188879089135779840000, 2844659827809077182003221596452154340416256794895644098560000]

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

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