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.

A222077 O.g.f.: Sum_{n>=0} n^n*(n+3)^n * exp(-n*(n+3)*x) * x^n / n!.

Table of values

n a(n)
0 1
1 4
2 34
3 504
4 10572
5 285408
6 9419440
7 367571200
8 16562241744
9 846509123520
10 48401180913824
11 3061687935718272
12 212316590908782336
13 16018267935253721088
14 1306322033185206970368
15 114519518777575592865792
16 10740222055670467832259840
17 1073051903942317493993088000

List of values

[1, 4, 34, 504, 10572, 285408, 9419440, 367571200, 16562241744, 846509123520, 48401180913824, 3061687935718272, 212316590908782336, 16018267935253721088, 1306322033185206970368, 114519518777575592865792, 10740222055670467832259840, 1073051903942317493993088000]