cp's OEIS Frontend

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.

A337849 G.f.: 1 = Sum_{n>=0} a(n) * x^n / (1 + x*(1+x)^n)^(n+1).

Table of values

n a(n)
0 1
1 1
2 1
3 3
4 9
5 45
6 237
7 1591
8 11795
9 99651
10 928507
11 9474043
12 104866399
13 1249073623
14 15914416345
15 215724860511
16 3097002496225
17 46904398032017
18 746831626559889
19 12463977258581151
20 217445976215654257
21 3956098180940284169
22 74897945785223884653

List of values

[1, 1, 1, 3, 9, 45, 237, 1591, 11795, 99651, 928507, 9474043, 104866399, 1249073623, 15914416345, 215724860511, 3097002496225, 46904398032017, 746831626559889, 12463977258581151, 217445976215654257, 3956098180940284169, 74897945785223884653]