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.

A177172 Sequence defined by the recurrence formula a(n+1)=sum(a(p)*a(n-p)+k,p=0..n)+l for n>=1, with here a(0)=1, a(1)=10, k=0 and l=-2.

Table of values

n a(n)
0 1
1 10
2 18
3 134
4 626
5 4254
6 25850
7 177270
8 1192450
9 8392846
10 59270218
11 427294630
12 3103586514
13 22805459262
14 168767740698
15 1258575706582
16 9441189199010
17 71224314198510
18 539889535264490
19 4110514381564422
20 31418080601125746

List of values

[1, 10, 18, 134, 626, 4254, 25850, 177270, 1192450, 8392846, 59270218, 427294630, 3103586514, 22805459262, 168767740698, 1258575706582, 9441189199010, 71224314198510, 539889535264490, 4110514381564422, 31418080601125746]