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.

A249286 Number of length n+3 0..4 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)
1 524
2 2228
3 9504
4 40588
5 173368
6 740616
7 3164312
8 13520668
9 57772560
10 246857788
11 1054810472
12 4507167504
13 19258980852
14 82293014888
15 351635522044
16 1502528043892
17 6420257600360
18 27433569837528
19 117222829267252

List of values

[524, 2228, 9504, 40588, 173368, 740616, 3164312, 13520668, 57772560, 246857788, 1054810472, 4507167504, 19258980852, 82293014888, 351635522044, 1502528043892, 6420257600360, 27433569837528, 117222829267252]

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

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