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.

A249469 Number of length 3+4 0..n arrays with no five consecutive terms having four times any element equal to the sum of the remaining four.

Table of values

n a(n)
1 112
2 1140
3 10124
4 48180
5 185982
6 565516
7 1488294
8 3491108
9 7479834
10 14872588
11 27848932
12 49534034
13 84370308
14 138424022
15 219934350
16 339564798
17 511246534
18 752562638
19 1085714794
20 1538310894
21 2144026442
22 2943704164
23 3986818718

List of values

[112, 1140, 10124, 48180, 185982, 565516, 1488294, 3491108, 7479834, 14872588, 27848932, 49534034, 84370308, 138424022, 219934350, 339564798, 511246534, 752562638, 1085714794, 1538310894, 2144026442, 2943704164, 3986818718]

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

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