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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.

A249711 Number of length 5+3 0..n arrays with every four consecutive terms having the maximum of some two terms equal to the minimum of the remaining two terms.

Table of values

n a(n)
1 38
2 377
3 1724
4 5425
5 13666
6 29673
7 57912
8 104289
9 176350
10 283481
11 437108
12 650897
13 940954
14 1326025
15 1827696
16 2470593
17 3282582
18 4294969
19 5542700
20 7064561
21 8903378
22 11106217
23 13724584
24 16814625
25 20437326
26 24658713
27 29550052
28 35188049
29 41655050

List of values

[38, 377, 1724, 5425, 13666, 29673, 57912, 104289, 176350, 283481, 437108, 650897, 940954, 1326025, 1827696, 2470593, 3282582, 4294969, 5542700, 7064561, 8903378, 11106217, 13724584, 16814625, 20437326, 24658713, 29550052, 35188049, 41655050]

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

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