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.

A249004 Number of length 3+4 0..n 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)
1 112
2 1140
3 8680
4 42308
5 163112
6 485580
7 1298968
8 2997774
9 6449496
10 12811158
11 24159584
12 42911184
13 73629888
14 120844328
15 193152322
16 298869080
17 452268778
18 666984964
19 966771826
20 1372738118
21 1920965096
22 2643444158
23 3592832436

List of values

[112, 1140, 8680, 42308, 163112, 485580, 1298968, 2997774, 6449496, 12811158, 24159584, 42911184, 73629888, 120844328, 193152322, 298869080, 452268778, 666984964, 966771826, 1372738118, 1920965096, 2643444158, 3592832436]

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

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