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.

A295061 Solution of the complementary equation a(n) = 4*a(n-2) + b(n-1), where a(0) = 1, a(1) = 3, b(0) = 2, and (a(n)) and (b(n)) are increasing complementary sequences.

Table of values

n a(n)
0 1
1 3
2 8
3 17
4 38
5 75
6 161
7 310
8 655
9 1252
10 2633
11 5022
12 10547
13 20104
14 42206
15 80435
16 168844
17 321761
18 675398
19 1287067
20 2701616
21 5148293
22 10806490
23 20593199
24 43225988
25 82372825
26 172903982

List of values

[1, 3, 8, 17, 38, 75, 161, 310, 655, 1252, 2633, 5022, 10547, 20104, 42206, 80435, 168844, 321761, 675398, 1287067, 2701616, 5148293, 10806490, 20593199, 43225988, 82372825, 172903982]