A235673 - cp's OEIS frontend

A235673 Number of (n+1) X (2+1) 0..1 arrays with the difference between each 2 X 2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise.

n	a(n)
1	58
2	380
3	2456
4	15790
5	101398
6	650928
7	4178316
8	26820102
9	172154058
10	1105028596
11	7092994476
12	45528746034
13	292241404878
14	1875848682364
15	12040758823136
16	77287616186486
17	496096276240318
18	3184358988382152
19	20439867526684676

[58, 380, 2456, 15790, 101398, 650928, 4178316, 26820102, 172154058, 1105028596, 7092994476, 45528746034, 292241404878, 1875848682364, 12040758823136, 77287616186486, 496096276240318, 3184358988382152, 20439867526684676]

cp's OEIS Frontend

A235673 Number of (n+1) X (2+1) 0..1 arrays with the difference between each 2 X 2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise.

Table of values

List of values