A250785 - cp's OEIS frontend

A250785 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 absolute value of x(i,j)-x(i-1,j) in the j direction.

n	a(n)
1	36
2	96
3	230
4	534
5	1194
6	2604
7	5568
8	11732
9	24442
10	50482
11	103566
12	211360
13	429580
14	870280
15	1758574
16	3546318
17	7139858
18	14356148
19	28835992
20	57872156
21	116068226
22	232660586
23	466169270
24	933710824
25	1869642084
26	3742876944
27	7491567158

[36, 96, 230, 534, 1194, 2604, 5568, 11732, 24442, 50482, 103566, 211360, 429580, 870280, 1758574, 3546318, 7139858, 14356148, 28835992, 57872156, 116068226, 232660586, 466169270, 933710824, 1869642084, 3742876944, 7491567158]

cp's OEIS Frontend

A250785 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 absolute value of x(i,j)-x(i-1,j) in the j direction.

Table of values

List of values