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.

A155456 Write (1+1/x)*log(1+x) = Sum c(n)*x^n; then a(n) = (n+1)!*c(n).

Table of values

n a(n)
0 -1
1 -1
2 1
3 -2
4 6
5 -24
6 120
7 -720
8 5040
9 -40320
10 362880
11 -3628800
12 39916800
13 -479001600
14 6227020800
15 -87178291200
16 1307674368000
17 -20922789888000
18 355687428096000
19 -6402373705728000
20 121645100408832000

List of values

[-1, -1, 1, -2, 6, -24, 120, -720, 5040, -40320, 362880, -3628800, 39916800, -479001600, 6227020800, -87178291200, 1307674368000, -20922789888000, 355687428096000, -6402373705728000, 121645100408832000]