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.

A242227 a(n) = (2*n-1) * a(n-1) - a(n-2), a(0) = 1, a(1) = 2.

Table of values

n a(n)
0 1
1 2
2 5
3 23
4 156
5 1381
6 15035
7 194074
8 2896075
9 49039201
10 928848744
11 19456784423
12 446577192985
13 11144973040202
14 300467694892469
15 8702418178841399
16 269474495849190900
17 8883955944844458301
18 310668983573706849635
19 11485868436282308978194

List of values

[1, 2, 5, 23, 156, 1381, 15035, 194074, 2896075, 49039201, 928848744, 19456784423, 446577192985, 11144973040202, 300467694892469, 8702418178841399, 269474495849190900, 8883955944844458301, 310668983573706849635, 11485868436282308978194]