A249712 - cp's OEIS frontend

A249712 Number of length 6+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.

n	a(n)
1	52
2	659
3	3440
4	11925
5	32500
6	75495
7	156416
8	297321
9	528340
10	889339
11	1431728
12	2220413
13	3335892
14	4876495
15	6960768
16	9730001
17	13350900
18	18018403
19	23958640
20	31432037
21	40736564
22	52211127
23	66239104
24	83252025
25	103733396
26	128222667

[52, 659, 3440, 11925, 32500, 75495, 156416, 297321, 528340, 889339, 1431728, 2220413, 3335892, 4876495, 6960768, 9730001, 13350900, 18018403, 23958640, 31432037, 40736564, 52211127, 66239104, 83252025, 103733396, 128222667]

cp's OEIS Frontend

A249712 Number of length 6+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

List of values