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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.

A230317 E.g.f. satisfies: A(x) = Sum_{n>=0} x^n/n! * Product_{k=1..n} A(k*x).

Table of values

n a(n)
0 1
1 1
2 3
3 19
4 215
5 4016
6 119092
7 5503205
8 393154477
9 43298176708
10 7340865004766
11 1913028475033699
12 764596866776205619
13 467416620805272150858
14 435773832975324764799712
15 617753035395626539657324801
16 1327738980050724547857227605753
17 4314831625390935798178255342966024

List of values

[1, 1, 3, 19, 215, 4016, 119092, 5503205, 393154477, 43298176708, 7340865004766, 1913028475033699, 764596866776205619, 467416620805272150858, 435773832975324764799712, 617753035395626539657324801, 1327738980050724547857227605753, 4314831625390935798178255342966024]

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

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