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.

A176753 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)=1, k=0 and l=-2.

Table of values

n a(n)
0 1
1 1
2 0
3 -1
4 -4
5 -12
6 -34
7 -93
8 -248
9 -644
10 -1622
11 -3932
12 -9054
13 -19314
14 -36066
15 -48953
16 8372
17 415848
18 2180870
19 8609676
20 29858358
21 95443242
22 286747530
23 815867808
24 2199049782
25 5577559986
26 13083598882
27 27240793594
28 44583397354

List of values

[1, 1, 0, -1, -4, -12, -34, -93, -248, -644, -1622, -3932, -9054, -19314, -36066, -48953, 8372, 415848, 2180870, 8609676, 29858358, 95443242, 286747530, 815867808, 2199049782, 5577559986, 13083598882, 27240793594, 44583397354]