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.

A158831 A diagonal in the array A158825 of coefficients of successive iterations of x*C(x), where C(x) is the Catalan function (A000108).

Table of values

n a(n)
1 1
2 1
3 6
4 54
5 640
6 9380
7 163576
8 3305484
9 75915708
10 1952409954
11 55573310936
12 1734182983962
13 58863621238500
14 2159006675844616
15 85088103159523296
16 3585740237981536700
17 160894462797493581048
18 7658326127259130753070

List of values

[1, 1, 6, 54, 640, 9380, 163576, 3305484, 75915708, 1952409954, 55573310936, 1734182983962, 58863621238500, 2159006675844616, 85088103159523296, 3585740237981536700, 160894462797493581048, 7658326127259130753070]

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

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