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.

A137739 Number of different strings of length n+6 obtained from "123...n" by iteratively duplicating any substring.

Table of values

n a(n)
1 1
2 64
3 355
4 1014
5 2218
6 4217
7 7343
8 12018
9 18767
10 28233
11 41193
12 58575
13 81476
14 111181
15 149183
16 197204
17 257217
18 331469
19 422505
20 533193
21 666750
22 826769
23 1017247
24 1242614
25 1507763
26 1818081
27 2179481
28 2598435
29 3082008
30 3637893
31 4274447
32 5000728
33 5826533
34 6762437

List of values

[1, 64, 355, 1014, 2218, 4217, 7343, 12018, 18767, 28233, 41193, 58575, 81476, 111181, 149183, 197204, 257217, 331469, 422505, 533193, 666750, 826769, 1017247, 1242614, 1507763, 1818081, 2179481, 2598435, 3082008, 3637893, 4274447, 5000728, 5826533, 6762437]