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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.

A323496 a(n) = Product_{k=1..n} (binomial(k-1,3) + binomial(n-k,3)).

Table of values

n a(n)
0 1
1 0
2 0
3 0
4 0
5 0
6 1600
7 1280000
8 1225000000
9 1487467520000
10 2342962705305600
11 4757234928058368000
12 12302981968140864000000
13 39976163552160000000000000
14 161025498138224463853824000000
15 794000312545927932130993635328000
16 4737527580526919896601692054005760000

List of values

[1, 0, 0, 0, 0, 0, 1600, 1280000, 1225000000, 1487467520000, 2342962705305600, 4757234928058368000, 12302981968140864000000, 39976163552160000000000000, 161025498138224463853824000000, 794000312545927932130993635328000, 4737527580526919896601692054005760000]

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

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