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.

A177169 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)=7, k=0 and l=-2.

Table of values

n a(n)
0 1
1 7
2 12
3 71
4 308
5 1752
6 9518
7 55995
8 331024
9 2018056
10 12445114
11 77971468
12 493457274
13 3154471374
14 20324817414
15 131901428431
16 861253742060
17 5654523909972
18 37304630338790
19 247183333507140
20 1644269062695294

List of values

[1, 7, 12, 71, 308, 1752, 9518, 55995, 331024, 2018056, 12445114, 77971468, 493457274, 3154471374, 20324817414, 131901428431, 861253742060, 5654523909972, 37304630338790, 247183333507140, 1644269062695294]