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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.

A179781 a(n) = AP(n) is the total number of aperiodic k-palindromes of n, 1 <= k <= n.

Table of values

n a(n)
1 1
2 1
3 1
4 2
5 3
6 5
7 7
8 12
9 14
10 27
11 31
12 54
13 63
14 119
15 123
16 240
17 255
18 490
19 511
20 990
21 1015
22 2015
23 2047
24 4020
25 4092
26 8127
27 8176
28 16254
29 16383
30 32607
31 32767
32 65280
33 65503
34 130815
35 131061
36 261576
37 262143
38 523775
39 524223
40 1047540
41 1048575
42 2096003
43 2097151
44 4192254

List of values

[1, 1, 1, 2, 3, 5, 7, 12, 14, 27, 31, 54, 63, 119, 123, 240, 255, 490, 511, 990, 1015, 2015, 2047, 4020, 4092, 8127, 8176, 16254, 16383, 32607, 32767, 65280, 65503, 130815, 131061, 261576, 262143, 523775, 524223, 1047540, 1048575, 2096003, 2097151, 4192254]

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

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