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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.

A360949 G.f. A(x) satisfies: 1 = Sum_{n>=0} (-x/2)^n * (A(x)^n + (-1)^n)^n.

Table of values

n a(n)
0 1
1 2
2 8
3 50
4 376
5 3124
6 27804
7 260496
8 2539616
9 25556330
10 263922884
11 2785341186
12 29948035032
13 327315887046
14 3630399545244
15 40813503158790
16 464662514679168
17 5354222585965310
18 62419468527625408
19 736098528973804246
20 8781173950238637928
21 105987886325647341056

List of values

[1, 2, 8, 50, 376, 3124, 27804, 260496, 2539616, 25556330, 263922884, 2785341186, 29948035032, 327315887046, 3630399545244, 40813503158790, 464662514679168, 5354222585965310, 62419468527625408, 736098528973804246, 8781173950238637928, 105987886325647341056]

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

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