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.

A254224 Number of length 7 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 15
4 383
5 633
6 6490
7 18214
8 60168
9 97089
10 296955
11 420163
12 1046085
13 1799943
14 3545675
15 4664339
16 9251052
17 11630683
18 20703803
19 29730723
20 47075466
21 56991009
22 93151404
23 122440340
24 182865306
25 239287220
26 341720757
27 401640735
28 596658745

List of values

[0, 2, 15, 383, 633, 6490, 18214, 60168, 97089, 296955, 420163, 1046085, 1799943, 3545675, 4664339, 9251052, 11630683, 20703803, 29730723, 47075466, 56991009, 93151404, 122440340, 182865306, 239287220, 341720757, 401640735, 596658745]

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

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