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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.

A264227 G.f. A(x) satisfies: A(x)^2 = A( x^2/(1-10*x) ), with A(0) = 0.

Table of values

n a(n)
1 1
2 5
3 40
4 350
5 3220
6 30500
7 294625
8 2886875
9 28598035
10 285786575
11 2876602225
12 29131678625
13 296574083425
14 3033183585125
15 31148390740375
16 321040368434375
17 3319845741478030
18 34433523106882550
19 358129419509956150
20 3734203057793066750
21 39027568927659117700
22 408777143934160983500
23 4290195975642644398000
24 45111124579414224095000

List of values

[1, 5, 40, 350, 3220, 30500, 294625, 2886875, 28598035, 285786575, 2876602225, 29131678625, 296574083425, 3033183585125, 31148390740375, 321040368434375, 3319845741478030, 34433523106882550, 358129419509956150, 3734203057793066750, 39027568927659117700, 408777143934160983500, 4290195975642644398000, 45111124579414224095000]

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

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