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.

A351050 G.f. A(x) satisfies: A(x) = 1 + x + x^2 * A(x/(1 - 4*x)) / (1 - 4*x).

Table of values

n a(n)
0 1
1 1
2 1
3 5
4 25
5 129
6 713
7 4373
8 30289
9 235041
10 1998001
11 18226117
12 176364969
13 1803064033
14 19463340729
15 221691818005
16 2658751147297
17 33458500940993
18 440140082161121
19 6032572875160069
20 85936355674437561
21 1270176766188103105
22 19453176663852208937

List of values

[1, 1, 1, 5, 25, 129, 713, 4373, 30289, 235041, 1998001, 18226117, 176364969, 1803064033, 19463340729, 221691818005, 2658751147297, 33458500940993, 440140082161121, 6032572875160069, 85936355674437561, 1270176766188103105, 19453176663852208937]

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

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