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.

A177130 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)=9, k=0 and l=1.

Table of values

n a(n)
0 1
1 9
2 19
3 120
4 583
5 3688
6 22431
7 147801
8 979425
9 6696656
10 46323049
11 325632187
12 2312401207
13 16588994570
14 119955953891
15 873728090530
16 6403332744227
17 47188541743102
18 349446649937015
19 2599119078248913
20 19407853923218641

List of values

[1, 9, 19, 120, 583, 3688, 22431, 147801, 979425, 6696656, 46323049, 325632187, 2312401207, 16588994570, 119955953891, 873728090530, 6403332744227, 47188541743102, 349446649937015, 2599119078248913, 19407853923218641]