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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.

A377579 E.g.f. satisfies A(x) = (1 + x * exp(x*A(x)))^4.

Table of values

n a(n)
0 1
1 4
2 20
3 204
4 3112
5 61220
6 1523064
7 45456292
8 1586426720
9 63461164932
10 2862300600040
11 143766016251044
12 7959047336014416
13 481550056915454020
14 31615435540393172888
15 2238661916541220434660
16 170070509857455107126464
17 13798559748847266924993284
18 1190848786811966457102586824

List of values

[1, 4, 20, 204, 3112, 61220, 1523064, 45456292, 1586426720, 63461164932, 2862300600040, 143766016251044, 7959047336014416, 481550056915454020, 31615435540393172888, 2238661916541220434660, 170070509857455107126464, 13798559748847266924993284, 1190848786811966457102586824]

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

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