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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.

A189780 Expansion of e.g.f. 1/(1 - arcsin(x)).

Table of values

n a(n)
0 1
1 1
2 2
3 7
4 32
5 189
6 1328
7 11019
8 104064
9 1111641
10 13166592
11 172006671
12 2448559104
13 37814647701
14 628513744896
15 11201565483219
16 212867324706816
17 4299987047933745
18 91950128086450176
19 2076040931023605015
20 49332990241672003584
21 1231115505653454828525
22 32183083119025449861120

List of values

[1, 1, 2, 7, 32, 189, 1328, 11019, 104064, 1111641, 13166592, 172006671, 2448559104, 37814647701, 628513744896, 11201565483219, 212867324706816, 4299987047933745, 91950128086450176, 2076040931023605015, 49332990241672003584, 1231115505653454828525, 32183083119025449861120]

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

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