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.

A161944 a(n) = ((4+sqrt(2))*(3+sqrt(2))^n + (4-sqrt(2))*(3-sqrt(2))^n)/4.

Table of values

n a(n)
0 2
1 7
2 28
3 119
4 518
5 2275
6 10024
7 44219
8 195146
9 861343
10 3802036
11 16782815
12 74082638
13 327016123
14 1443518272
15 6371996771
16 28127352722
17 124160138935
18 548069364556
19 2419295214791
20 10679285736854
21 47140647917587

List of values

[2, 7, 28, 119, 518, 2275, 10024, 44219, 195146, 861343, 3802036, 16782815, 74082638, 327016123, 1443518272, 6371996771, 28127352722, 124160138935, 548069364556, 2419295214791, 10679285736854, 47140647917587]