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.

A271358 a(n) = k*Fibonacci(2*n+1) + (k+1)*Fibonacci(2*n), where k=4.

Table of values

n a(n)
0 4
1 13
2 35
3 92
4 241
5 631
6 1652
7 4325
8 11323
9 29644
10 77609
11 203183
12 531940
13 1392637
14 3645971
15 9545276
16 24989857
17 65424295
18 171283028
19 448424789
20 1173991339
21 3073549228
22 8046656345
23 21066419807
24 55152603076
25 144391389421
26 378021565187
27 989673306140

List of values

[4, 13, 35, 92, 241, 631, 1652, 4325, 11323, 29644, 77609, 203183, 531940, 1392637, 3645971, 9545276, 24989857, 65424295, 171283028, 448424789, 1173991339, 3073549228, 8046656345, 21066419807, 55152603076, 144391389421, 378021565187, 989673306140]