cp's OEIS Frontend

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.

A097188 G.f. A(x) satisfies A057083(x*A(x)) = A(x) and so equals the ratio of the g.f.s of any two adjacent diagonals of triangle A097186.

Table of values

n a(n)
0 1
1 3
2 15
3 90
4 594
5 4158
6 30294
7 227205
8 1741905
9 13586859
10 107459703
11 859677624
12 6943550040
13 56540336040
14 463630755528
15 3824953733106
16 31724616256938
17 264371802141150
18 2212374554760150
19 18583946259985260
20 156636118477018620

List of values

[1, 3, 15, 90, 594, 4158, 30294, 227205, 1741905, 13586859, 107459703, 859677624, 6943550040, 56540336040, 463630755528, 3824953733106, 31724616256938, 264371802141150, 2212374554760150, 18583946259985260, 156636118477018620]

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

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