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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.

A282923 Expansion of Product_{n>=1} (1 - x^(7*n))^20/(1 - x^n)^21 in powers of x.

Table of values

n a(n)
0 1
1 21
2 252
3 2233
4 16170
5 100926
6 560945
7 2837398
8 13265679
9 57989435
10 239125579
11 936702879
12 3505361650
13 12590400326
14 43572202835
15 145770820937
16 472764167939
17 1490002933265
18 4573182416677
19 13694526423445
20 40076281579264
21 114782535792335
22 322167257486123
23 887188897987819
24 2399619923361150
25 6380874322337452
26 16695968482412345

List of values

[1, 21, 252, 2233, 16170, 100926, 560945, 2837398, 13265679, 57989435, 239125579, 936702879, 3505361650, 12590400326, 43572202835, 145770820937, 472764167939, 1490002933265, 4573182416677, 13694526423445, 40076281579264, 114782535792335, 322167257486123, 887188897987819, 2399619923361150, 6380874322337452, 16695968482412345]

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

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