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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.

A155805 E.g.f. satisfies: A(x) = Sum_{n>=0} x^n/n! * A(x)^(n(n+1)/2).

Table of values

n a(n)
0 1
1 1
2 3
3 19
4 191
5 2656
6 47392
7 1034335
8 26721781
9 798018616
10 27058991246
11 1027237384009
12 43172232488959
13 1990253576425960
14 99871804451808040
15 5419775866582473211
16 316301430225674131433
17 19756213549154356027408

List of values

[1, 1, 3, 19, 191, 2656, 47392, 1034335, 26721781, 798018616, 27058991246, 1027237384009, 43172232488959, 1990253576425960, 99871804451808040, 5419775866582473211, 316301430225674131433, 19756213549154356027408]

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

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