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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.

A141004 Expansion of e.g.f. exp(Sum_{d|6} (exp(d*x)-1)/d).

Table of values

n a(n)
0 1
1 4
2 28
3 258
4 2892
5 37778
6 560124
7 9256010
8 168182044
9 3325057826
10 70934634236
11 1621828212826
12 39517131361884
13 1021237022557682
14 27877344103738940
15 800976143703407210
16 24148078430008534428
17 761815206361252780098
18 25087729474993723079548

List of values

[1, 4, 28, 258, 2892, 37778, 560124, 9256010, 168182044, 3325057826, 70934634236, 1621828212826, 39517131361884, 1021237022557682, 27877344103738940, 800976143703407210, 24148078430008534428, 761815206361252780098, 25087729474993723079548]

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

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