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.

A202206 a(n) = 3*a(n-1)+3*a(n-2) with a(0)=1 and a(1)=2.

Table of values

n a(n)
0 1
1 2
2 9
3 33
4 126
5 477
6 1809
7 6858
8 26001
9 98577
10 373734
11 1416933
12 5372001
13 20366802
14 77216409
15 292749633
16 1109898126
17 4207943277
18 15953524209
19 60484402458
20 229313780001
21 869394547377
22 3296124982134

List of values

[1, 2, 9, 33, 126, 477, 1809, 6858, 26001, 98577, 373734, 1416933, 5372001, 20366802, 77216409, 292749633, 1109898126, 4207943277, 15953524209, 60484402458, 229313780001, 869394547377, 3296124982134]