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.

A129867 Row sums of triangular array T: T(j,k) = k*(j-k)! for k < j, T(j,k) = 1 for k = j; 1 <= k <= j.

Table of values

n a(n)
1 1
2 2
3 5
4 14
5 47
6 200
7 1073
8 6986
9 53219
10 462332
11 4500245
12 48454958
13 571411271
14 7321388384
15 101249656697
16 1502852293010
17 23827244817323
18 401839065437636
19 7182224591785949
20 135607710526966262
21 2696935204638786575

List of values

[1, 2, 5, 14, 47, 200, 1073, 6986, 53219, 462332, 4500245, 48454958, 571411271, 7321388384, 101249656697, 1502852293010, 23827244817323, 401839065437636, 7182224591785949, 135607710526966262, 2696935204638786575]

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

Content is available under The OEIS End-User License Agreement.