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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.

A384091 a(n) = [x^n] Product_{k=1..n} (1 + k^2*x)^n.

Table of values

n a(n)
0 1
1 1
2 33
3 6968
4 4503078
5 6507545775
6 17683339661956
7 80849884332530600
8 575530003415681613468
9 6023356562522188931288775
10 88682105895482127774508529242
11 1773600518272635675832361778156960
12 46830898160739235037404595987069052560
13 1594447058825655577475889095097916983404652

List of values

[1, 1, 33, 6968, 4503078, 6507545775, 17683339661956, 80849884332530600, 575530003415681613468, 6023356562522188931288775, 88682105895482127774508529242, 1773600518272635675832361778156960, 46830898160739235037404595987069052560, 1594447058825655577475889095097916983404652]

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

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