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.

A006138 a(n) = a(n-1) + 3*a(n-2).

Table of values

n a(n)
0 1
1 2
2 5
3 11
4 26
5 59
6 137
7 314
8 725
9 1667
10 3842
11 8843
12 20369
13 46898
14 108005
15 248699
16 572714
17 1318811
18 3036953
19 6993386
20 16104245
21 37084403
22 85397138
23 196650347
24 452841761
25 1042792802
26 2401318085
27 5529696491
28 12733650746
29 29322740219
30 67523692457
31 155491913114

List of values

[1, 2, 5, 11, 26, 59, 137, 314, 725, 1667, 3842, 8843, 20369, 46898, 108005, 248699, 572714, 1318811, 3036953, 6993386, 16104245, 37084403, 85397138, 196650347, 452841761, 1042792802, 2401318085, 5529696491, 12733650746, 29322740219, 67523692457, 155491913114]

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

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