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.

A143414 Apéry-like numbers for the constant 1/e: a(n) = (1/(n-1)!)*Sum_{k = 0..n-1} binomial(n-1,k)*(2*n-k)!.

Table of values

n a(n)
0 0
1 2
2 30
3 492
4 9620
5 222630
6 5989242
7 184139480
8 6377545512
9 245868202890
10 10446648201110
11 485126443539012
12 24449173476952380
13 1329144227959100462
14 77535552689576436210
15 4831278674685354629040
16 320262424087652686405712

List of values

[0, 2, 30, 492, 9620, 222630, 5989242, 184139480, 6377545512, 245868202890, 10446648201110, 485126443539012, 24449173476952380, 1329144227959100462, 77535552689576436210, 4831278674685354629040, 320262424087652686405712]