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.

A249710 Number of length 4+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 28
2 221
3 896
4 2601
5 6172
6 12789
7 24032
8 41937
9 69052
10 108493
11 164000
12 239993
13 341628
14 474853
15 646464
16 864161
17 1136604
18 1473469
19 1885504
20 2384585
21 2983772
22 3697365
23 4540960
24 5531505
25 6687356
26 8028333
27 9575776
28 11352601
29 13383356

List of values

[28, 221, 896, 2601, 6172, 12789, 24032, 41937, 69052, 108493, 164000, 239993, 341628, 474853, 646464, 864161, 1136604, 1473469, 1885504, 2384585, 2983772, 3697365, 4540960, 5531505, 6687356, 8028333, 9575776, 11352601, 13383356]