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.

A301627 G.f. A(x) satisfies: A(x) = 1/(1 - x*A(x)/(1 - x^2*A(x)^2/(1 - x^3*A(x)^3/(1 - x^4*A(x)^4/(1 - ...))))), a continued fraction.

Table of values

n a(n)
0 1
1 1
2 2
3 6
4 20
5 71
6 265
7 1024
8 4059
9 16414
10 67451
11 280856
12 1182379
13 5024361
14 21522055
15 92833874
16 402879747
17 1757852317
18 7706728006
19 33932931008
20 149986338830
21 665276977574
22 2960306454110
23 13210976195068
24 59114318997648
25 265166069469324
26 1192145264317628
27 5370983954821322

List of values

[1, 1, 2, 6, 20, 71, 265, 1024, 4059, 16414, 67451, 280856, 1182379, 5024361, 21522055, 92833874, 402879747, 1757852317, 7706728006, 33932931008, 149986338830, 665276977574, 2960306454110, 13210976195068, 59114318997648, 265166069469324, 1192145264317628, 5370983954821322]

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

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