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.

A026597 Expansion of (1+x)/(1-x-4*x^2).

Table of values

n a(n)
0 1
1 2
2 6
3 14
4 38
5 94
6 246
7 622
8 1606
9 4094
10 10518
11 26894
12 68966
13 176542
14 452406
15 1158574
16 2968198
17 7602494
18 19475286
19 49885262
20 127786406
21 327327454
22 838473078
23 2147782894
24 5501675206
25 14092806782
26 36099507606
27 92470734734

List of values

[1, 2, 6, 14, 38, 94, 246, 622, 1606, 4094, 10518, 26894, 68966, 176542, 452406, 1158574, 2968198, 7602494, 19475286, 49885262, 127786406, 327327454, 838473078, 2147782894, 5501675206, 14092806782, 36099507606, 92470734734]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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