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.

A019310 Number of words of length n (n >= 1) over a two-letter alphabet having a minimal period of size n-1.

Table of values

n a(n)
1 0
2 2
3 2
4 6
5 10
6 22
7 38
8 82
9 154
10 318
11 614
12 1250
13 2462
14 4962
15 9842
16 19766
17 39378
18 78910
19 157502
20 315322
21 630030
22 1260674
23 2520098
24 5041446
25 10080430
26 20163322
27 40321682
28 80648326
29 161286810
30 322583462
31 645147158
32 1290314082
33 2580588786
34 5161216950

List of values

[0, 2, 2, 6, 10, 22, 38, 82, 154, 318, 614, 1250, 2462, 4962, 9842, 19766, 39378, 78910, 157502, 315322, 630030, 1260674, 2520098, 5041446, 10080430, 20163322, 40321682, 80648326, 161286810, 322583462, 645147158, 1290314082, 2580588786, 5161216950]

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

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