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.

A255710 Number of length n 1..(2+2) arrays with no leading partial sum equal to a prime and no consecutive values equal.

Table of values

n a(n)
1 2
2 2
3 4
4 6
5 8
6 14
7 19
8 33
9 69
10 162
11 325
12 616
13 1314
14 2874
15 6099
16 11780
17 21630
18 42778
19 95379
20 225424
21 532771
22 1184433
23 2434239
24 4904932
25 10213447
26 21612164
27 44580230
28 89065496
29 178617292
30 373380471
31 821875838
32 1887456086
33 4465488647

List of values

[2, 2, 4, 6, 8, 14, 19, 33, 69, 162, 325, 616, 1314, 2874, 6099, 11780, 21630, 42778, 95379, 225424, 532771, 1184433, 2434239, 4904932, 10213447, 21612164, 44580230, 89065496, 178617292, 373380471, 821875838, 1887456086, 4465488647]

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

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