A250730 - cp's OEIS frontend

A250730 Number of (1+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	9
2	22
3	50
4	114
5	257
6	579
7	1302
8	2927
9	6578
10	14782
11	33216
12	74637
13	167709
14	376840
15	846753
16	1902638
17	4275190
18	9606266
19	21585085
20	48501247
21	108981314
22	244878791
23	550237650
24	1236372778
25	2778104416
26	6242343961
27	14026419561
28	31517078668

[9, 22, 50, 114, 257, 579, 1302, 2927, 6578, 14782, 33216, 74637, 167709, 376840, 846753, 1902638, 4275190, 9606266, 21585085, 48501247, 108981314, 244878791, 550237650, 1236372778, 2778104416, 6242343961, 14026419561, 31517078668]

cp's OEIS Frontend

A250730 Number of (1+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