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.

A164604 a(n) = ((1+4*sqrt(2))*(3+2*sqrt(2))^n + (1-4*sqrt(2))*(3-2*sqrt(2))^n)/2.

Table of values

n a(n)
0 1
1 19
2 113
3 659
4 3841
5 22387
6 130481
7 760499
8 4432513
9 25834579
10 150574961
11 877615187
12 5115116161
13 29813081779
14 173763374513
15 1012767165299
16 5902839617281
17 34404270538387
18 200522783613041
19 1168732431139859

List of values

[1, 19, 113, 659, 3841, 22387, 130481, 760499, 4432513, 25834579, 150574961, 877615187, 5115116161, 29813081779, 173763374513, 1012767165299, 5902839617281, 34404270538387, 200522783613041, 1168732431139859]