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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.

A247527 Number of length n+3 0..2 arrays with some disjoint pairs in every consecutive four terms having the same sum.

Table of values

n a(n)
1 33
2 45
3 61
4 81
5 105
6 153
7 217
8 297
9 393
10 585
11 841
12 1161
13 1545
14 2313
15 3337
16 4617
17 6153
18 9225
19 13321
20 18441
21 24585
22 36873
23 53257
24 73737
25 98313
26 147465
27 213001
28 294921
29 393225
30 589833
31 851977
32 1179657
33 1572873
34 2359305
35 3407881
36 4718601
37 6291465

List of values

[33, 45, 61, 81, 105, 153, 217, 297, 393, 585, 841, 1161, 1545, 2313, 3337, 4617, 6153, 9225, 13321, 18441, 24585, 36873, 53257, 73737, 98313, 147465, 213001, 294921, 393225, 589833, 851977, 1179657, 1572873, 2359305, 3407881, 4718601, 6291465]

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

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