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.

A298416 a(n) = 2*a(n-1) + 2*a(n-2) - a([n/2]), where a(0) = 1, a(1) = 1, a(2) = 1.

Table of values

n a(n)
0 1
1 1
2 1
3 3
4 7
5 19
6 49
7 133
8 357
9 973
10 2641
11 7209
12 19651
13 53671
14 146511
15 400231
16 1093127
17 2986359
18 8157999
19 22287743
20 60888843
21 166350531
22 454471539
23 1241636931
24 3392197289
25 9267648789
26 25319638485
27 69174520877
28 188988172213
29 516325239669
30 1410626423533

List of values

[1, 1, 1, 3, 7, 19, 49, 133, 357, 973, 2641, 7209, 19651, 53671, 146511, 400231, 1093127, 2986359, 8157999, 22287743, 60888843, 166350531, 454471539, 1241636931, 3392197289, 9267648789, 25319638485, 69174520877, 188988172213, 516325239669, 1410626423533]