A250652 - cp's OEIS frontend

A250652 Number of (n+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	34
3	109
4	316
5	859
6	2234
7	5625
8	13816
9	33271
10	78838
11	184309
12	425972
13	974835
14	2211826
15	4980721
16	11141104
17	24772591
18	54788078
19	120586221
20	264241132
21	576716779
22	1254096874
23	2717908969
24	5872025576
25	12650020839
26	27179089894

[9, 34, 109, 316, 859, 2234, 5625, 13816, 33271, 78838, 184309, 425972, 974835, 2211826, 4980721, 11141104, 24772591, 54788078, 120586221, 264241132, 576716779, 1254096874, 2717908969, 5872025576, 12650020839, 27179089894]

cp's OEIS Frontend

A250652 Number of (n+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