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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.

A278556 Expansion of Product_{n>=1} (1 - x^(5*n))^18/(1 - x^n)^19 in powers of x.

Table of values

n a(n)
0 1
1 19
2 209
3 1710
4 11495
5 66862
6 347339
7 1645875
8 7221520
9 29668595
10 115116233
11 424720338
12 1498263563
13 5076482415
14 16583497160
15 52399330389
16 160586833362
17 478482249548
18 1388989067820
19 3935549005725
20 10901608510397
21 29565343541110
22 78604103339462

List of values

[1, 19, 209, 1710, 11495, 66862, 347339, 1645875, 7221520, 29668595, 115116233, 424720338, 1498263563, 5076482415, 16583497160, 52399330389, 160586833362, 478482249548, 1388989067820, 3935549005725, 10901608510397, 29565343541110, 78604103339462]

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

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