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.

A248996 Number of length n+4 0..3 arrays with no five consecutive terms having two times the sum of any three elements equal to three times the sum of the remaining two.

Table of values

n a(n)
1 820
2 2668
3 8680
4 28240
5 91888
6 299044
7 973204
8 3167500
9 10309372
10 33554728
11 109215076
12 355477276
13 1157029012
14 3765974644
15 12257760052
16 39897482020
17 129861371368
18 422682950584
19 1375781835724
20 4478003930896
21 14575364597464

List of values

[820, 2668, 8680, 28240, 91888, 299044, 973204, 3167500, 10309372, 33554728, 109215076, 355477276, 1157029012, 3765974644, 12257760052, 39897482020, 129861371368, 422682950584, 1375781835724, 4478003930896, 14575364597464]

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

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