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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.

A379202 G.f. A(x) satisfies 1/x = Sum_{n=-oo..+oo} A(x)^n * (A(x)^n + 2)^(n+1).

Table of values

n a(n)
1 1
2 4
3 20
4 122
5 850
6 6432
7 51324
8 424694
9 3608592
10 31291658
11 275774228
12 2462835772
13 22239367632
14 202713590686
15 1862689951724
16 17235880764264
17 160466865121154
18 1502055108051124
19 14127846520455180
20 133455751612975948
21 1265563747442829216
22 12043611154775588194
23 114978748131733714360

List of values

[1, 4, 20, 122, 850, 6432, 51324, 424694, 3608592, 31291658, 275774228, 2462835772, 22239367632, 202713590686, 1862689951724, 17235880764264, 160466865121154, 1502055108051124, 14127846520455180, 133455751612975948, 1265563747442829216, 12043611154775588194, 114978748131733714360]

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

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