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.

A249213 Number of length 1+6 0..n arrays with no seven consecutive terms having five times the sum of any two elements equal to two times the sum of the remaining five.

Table of values

n a(n)
1 126
2 1792
3 14336
4 67452
5 242494
6 714980
7 1826748
8 4173442
9 8762390
10 17110282
11 31597020
12 55472158
13 93560894
14 152043682
15 239777076
16 367458644
17 550136314
18 805205100
19 1156638980
20 1631284144
21 2265657954
22 3099326244
23 4185802572

List of values

[126, 1792, 14336, 67452, 242494, 714980, 1826748, 4173442, 8762390, 17110282, 31597020, 55472158, 93560894, 152043682, 239777076, 367458644, 550136314, 805205100, 1156638980, 1631284144, 2265657954, 3099326244, 4185802572]

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

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