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.

A249463 Number of length n+4 0..5 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 6730
2 35322
3 185982
4 980718
5 5174842
6 27309702
7 144140836
8 760833398
9 4016197550
10 21200828116
11 111916666626
12 590797789556
13 3118776430716
14 16463816131498
15 86911505863698
16 458800889433320
17 2421984333500072

List of values

[6730, 35322, 185982, 980718, 5174842, 27309702, 144140836, 760833398, 4016197550, 21200828116, 111916666626, 590797789556, 3118776430716, 16463816131498, 86911505863698, 458800889433320, 2421984333500072]

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

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