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.

A120758 The (1,3)-entry in the matrix M^n, where M is the 3 X 3 matrix [0,2,1; 2,1,2; 1,2,2] (n>=1).

Table of values

n a(n)
1 1
2 6
3 25
4 116
5 517
6 2338
7 10517
8 47400
9 213481
10 961726
11 4332145
12 19515036
13 87908397
14 395998298
15 1783838637
16 8035595600
17 36197658961
18 163058307446
19 734522939465
20 3308779311556
21 14904940203477
22 67141752851858
23 302451060668357
24 1362440511764600
25 6137337207120441

List of values

[1, 6, 25, 116, 517, 2338, 10517, 47400, 213481, 961726, 4332145, 19515036, 87908397, 395998298, 1783838637, 8035595600, 36197658961, 163058307446, 734522939465, 3308779311556, 14904940203477, 67141752851858, 302451060668357, 1362440511764600, 6137337207120441]