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.

A176754 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)=2, k=0 and l=-2.

Table of values

n a(n)
0 1
1 2
2 2
3 6
4 18
5 62
6 218
7 790
8 2914
9 10926
10 41514
11 159558
12 619314
13 2424414
14 9561594
15 37956726
16 151548930
17 608199182
18 2452070090
19 9926901670
20 40338175954
21 164471889342
22 672683135130
23 2759049956566
24 11345904429730
25 46769328002414

List of values

[1, 2, 2, 6, 18, 62, 218, 790, 2914, 10926, 41514, 159558, 619314, 2424414, 9561594, 37956726, 151548930, 608199182, 2452070090, 9926901670, 40338175954, 164471889342, 672683135130, 2759049956566, 11345904429730, 46769328002414]