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.

A343689 a(1)=0, a(2)=1, a(n) = (4*n-2)*a(n-1) + a(n-2), n > 2.

Table of values

n a(n)
1 0
2 1
3 10
4 141
5 2548
6 56197
7 1463670
8 43966297
9 1496317768
10 56904041481
11 2391466059970
12 110064342800101
13 5505608606065020
14 297412929070311181
15 17255455494684113518
16 1070135653599485349297
17 70646208593060717167120
18 4946304737167849687047697
19 366097196759013937558696698

List of values

[0, 1, 10, 141, 2548, 56197, 1463670, 43966297, 1496317768, 56904041481, 2391466059970, 110064342800101, 5505608606065020, 297412929070311181, 17255455494684113518, 1070135653599485349297, 70646208593060717167120, 4946304737167849687047697, 366097196759013937558696698]