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.

A203417 a(n) = A203415(n)/A000178(n).

Table of values

n a(n)
1 1
2 3
3 15
4 140
5 700
6 2520
7 44352
8 2196480
9 47567520
10 634233600
11 51753461760
12 13984935444480
13 1448751906201600
14 82605199597240320
15 32797812715211980800
16 5296846753506734899200
17 483765735240908144640000
18 28985693293514522492928000

List of values

[1, 3, 15, 140, 700, 2520, 44352, 2196480, 47567520, 634233600, 51753461760, 13984935444480, 1448751906201600, 82605199597240320, 32797812715211980800, 5296846753506734899200, 483765735240908144640000, 28985693293514522492928000]

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

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