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.

A254223 Number of length 6 1..(n+2) arrays with no leading or trailing partial sum equal to a prime and no consecutive values equal.

Table of values

n a(n)
1 0
2 2
3 6
4 136
5 192
6 1472
7 3720
8 11182
9 16698
10 44652
11 58174
12 129560
13 207946
14 379126
15 471170
16 858104
17 1025788
18 1709908
19 2349342
20 3507974
21 4085852
22 6291688
23 7972036
24 11313026
25 14262670
26 19396782
27 22025082
28 31062140
29 34653076
30 45272262
31 55014664

List of values

[0, 2, 6, 136, 192, 1472, 3720, 11182, 16698, 44652, 58174, 129560, 207946, 379126, 471170, 858104, 1025788, 1709908, 2349342, 3507974, 4085852, 6291688, 7972036, 11313026, 14262670, 19396782, 22025082, 31062140, 34653076, 45272262, 55014664]

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

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