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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.

A306495 Expansion of e.g.f. (2-exp(-x))*exp(x)/(x-1)^2.

Table of values

n a(n)
0 1
1 4
2 16
3 74
4 402
5 2542
6 18446
7 151482
8 1390738
9 14126582
10 157365222
11 1908110866
12 25022451482
13 352918443438
14 5327630246542
15 85716034274282
16 1464281837606946
17 26470821156031462
18 504879319309407158
19 10132393298394712002
20 213441590598213760042

List of values

[1, 4, 16, 74, 402, 2542, 18446, 151482, 1390738, 14126582, 157365222, 1908110866, 25022451482, 352918443438, 5327630246542, 85716034274282, 1464281837606946, 26470821156031462, 504879319309407158, 10132393298394712002, 213441590598213760042]

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

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