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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.

A382894 G.f. A(x) satisfies A(x) = 1/( 1 - x * (1+x)^3 * A(x) )^2.

Table of values

n a(n)
0 1
1 2
2 13
3 78
4 520
5 3664
6 26859
7 202808
8 1566693
9 12323982
10 98381841
11 795023284
12 6490951398
13 53462144788
14 443683640945
15 3706539244272
16 31144893093298
17 263052053436600
18 2231992880546400
19 19016760502183968
20 162629329186013523
21 1395500273826639540

List of values

[1, 2, 13, 78, 520, 3664, 26859, 202808, 1566693, 12323982, 98381841, 795023284, 6490951398, 53462144788, 443683640945, 3706539244272, 31144893093298, 263052053436600, 2231992880546400, 19016760502183968, 162629329186013523, 1395500273826639540]

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

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