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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.

A191769 G.f. A(x) satisfies: A(x) = 1 + Sum_{n>=1} x^n*A(x)^A006519(n) where A006519(n) = highest power of 2 dividing n.

Table of values

n a(n)
0 1
1 1
2 2
3 5
4 12
5 33
6 92
7 267
8 792
9 2403
10 7414
11 23199
12 73454
13 234901
14 757654
15 2461877
16 8051284
17 26480681
18 87534184
19 290652931
20 968992200
21 3242229475
22 10884245838
23 36648566551
24 123739675390
25 418848744517
26 1421072269234
27 4831811596381

List of values

[1, 1, 2, 5, 12, 33, 92, 267, 792, 2403, 7414, 23199, 73454, 234901, 757654, 2461877, 8051284, 26480681, 87534184, 290652931, 968992200, 3242229475, 10884245838, 36648566551, 123739675390, 418848744517, 1421072269234, 4831811596381]

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

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