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.

A007801 Expansion of f(f(x)), where f = x + x^2 + x^4 + x^8 + x^16 + ...

Table of values

n a(n)
1 1
2 2
3 2
4 3
5 6
6 8
7 8
8 16
9 22
10 40
11 80
12 146
13 240
14 356
15 488
16 661
17 870
18 1184
19 1936
20 3750
21 7976
22 17628
23 37528
24 74828
25 140480
26 249444
27 420392
28 678432
29 1056600
30 1593512
31 2334928
32 3337410
33 4660246
34 6364080
35 8527984
36 11258182
37 14753032
38 19622940
39 27836440

List of values

[1, 2, 2, 3, 6, 8, 8, 16, 22, 40, 80, 146, 240, 356, 488, 661, 870, 1184, 1936, 3750, 7976, 17628, 37528, 74828, 140480, 249444, 420392, 678432, 1056600, 1593512, 2334928, 3337410, 4660246, 6364080, 8527984, 11258182, 14753032, 19622940, 27836440]

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

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