A250733 - cp's OEIS frontend

A250733 Number of (4+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	58
2	144
3	365
4	885
5	2092
6	4889
7	11377
8	26419
9	61330
10	142336
11	330417
12	767047
13	1781019
14	4135537
15	9603827
16	22303104
17	51797791
18	120298572
19	279397140
20	648909915
21	1507137312
22	3500429630
23	8130041844
24	18882699707
25	43856786967
26	101861340070

[58, 144, 365, 885, 2092, 4889, 11377, 26419, 61330, 142336, 330417, 767047, 1781019, 4135537, 9603827, 22303104, 51797791, 120298572, 279397140, 648909915, 1507137312, 3500429630, 8130041844, 18882699707, 43856786967, 101861340070]

cp's OEIS Frontend

A250733 Number of (4+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