A250732 - cp's OEIS frontend

A250732 Number of (3+1) X (n+1) 0..1 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.

n	a(n)
1	33
2	85
3	208
4	496
5	1158
6	2699
7	6257
8	14520
9	33640
10	77999
11	180744
12	419005
13	971109
14	2251135
15	5217807
16	12095192
17	28036004
18	64988500
19	150642356
20	349192782
21	809429294
22	1876272631
23	4349215350
24	10081551668
25	23369149689
26	54170034264

[33, 85, 208, 496, 1158, 2699, 6257, 14520, 33640, 77999, 180744, 419005, 971109, 2251135, 5217807, 12095192, 28036004, 64988500, 150642356, 349192782, 809429294, 1876272631, 4349215350, 10081551668, 23369149689, 54170034264]

cp's OEIS Frontend

A250732 Number of (3+1) X (n+1) 0..1 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.

Table of values

List of values