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.

A249291 Number of length 1+3 0..n arrays with no four consecutive terms having the sum of any three elements equal to three times the fourth.

Table of values

n a(n)
1 14
2 66
3 204
4 524
5 1098
6 2070
7 3584
8 5808
9 8934
10 13202
11 18828
12 26100
13 35306
14 46758
15 60792
16 77792
17 98118
18 122202
19 150476
20 183396
21 221442
22 265142
23 315000
24 371592
25 435494
26 507306
27 587652
28 677204
29 776610
30 886590
31 1007864
32 1141176
33 1287294

List of values

[14, 66, 204, 524, 1098, 2070, 3584, 5808, 8934, 13202, 18828, 26100, 35306, 46758, 60792, 77792, 98118, 122202, 150476, 183396, 221442, 265142, 315000, 371592, 435494, 507306, 587652, 677204, 776610, 886590, 1007864, 1141176, 1287294]

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

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