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.

A319177 a(n) = n! * [x^n] Product_{k>=1} (1 + x^k/k)^n.

Table of values

n a(n)
0 1
1 1
2 4
3 39
4 500
5 7990
6 156684
7 3640392
8 97543088
9 2960758800
10 100428661440
11 3764849536800
12 154567280328768
13 6897265807262064
14 332386213584653760
15 17204016957686536320
16 951852354201532742400
17 56059949872552858763520
18 3501729575599545174352896
19 231227806715994322631352960

List of values

[1, 1, 4, 39, 500, 7990, 156684, 3640392, 97543088, 2960758800, 100428661440, 3764849536800, 154567280328768, 6897265807262064, 332386213584653760, 17204016957686536320, 951852354201532742400, 56059949872552858763520, 3501729575599545174352896, 231227806715994322631352960]

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

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