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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.

A361049 G.f. satisfies: A(x) = (1/x)*Series_Reversion( x/(1 + x*A(x)^2 + x^2*A(x)*A'(x)) ).

Table of values

n a(n)
0 1
1 1
2 4
3 28
4 269
5 3201
6 44737
7 711691
8 12630023
9 246594988
10 5244025502
11 120540052304
12 2976918491501
13 78601791684495
14 2209667973082374
15 65901745111752843
16 2078619947109354811
17 69141776287740239348
18 2419303138068147399700
19 88842295496847889690405

List of values

[1, 1, 4, 28, 269, 3201, 44737, 711691, 12630023, 246594988, 5244025502, 120540052304, 2976918491501, 78601791684495, 2209667973082374, 65901745111752843, 2078619947109354811, 69141776287740239348, 2419303138068147399700, 88842295496847889690405]

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

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