A250792 - cp's OEIS frontend

A250792 Number of (n+1) X (3+1) 0..1 arrays with nondecreasing min(x(i,j),x(i,j-1)) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.

n	a(n)
1	54
2	162
3	482
4	1430
5	4258
6	12706
7	37986
8	113694
9	340562
10	1020650
11	3059890
12	9175558
13	27518466
14	82538994
15	247584194
16	742687022
17	2227929970
18	6683527738
19	20050058898
20	60149128086
21	180445287074
22	541331666882
23	1623986612002
24	4871943058750

[54, 162, 482, 1430, 4258, 12706, 37986, 113694, 340562, 1020650, 3059890, 9175558, 27518466, 82538994, 247584194, 742687022, 2227929970, 6683527738, 20050058898, 60149128086, 180445287074, 541331666882, 1623986612002, 4871943058750]

cp's OEIS Frontend

A250792 Number of (n+1) X (3+1) 0..1 arrays with nondecreasing min(x(i,j),x(i,j-1)) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.

Table of values

List of values