A250748 - cp's OEIS frontend

A250748 Number of (n+1)X(n+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction.

n	a(n)
1	32
2	237
3	1353
4	6663
5	29814
6	124785
7	497471
8	1911819
9	7141428
10	26081157
11	93524517
12	330341391
13	1152105314
14	3974940633
15	13587035451
16	46067386899
17	155081690112
18	518770438893
19	1725559820033
20	5710472045463
21	18811007467662
22	61706609086017

[32, 237, 1353, 6663, 29814, 124785, 497471, 1911819, 7141428, 26081157, 93524517, 330341391, 1152105314, 3974940633, 13587035451, 46067386899, 155081690112, 518770438893, 1725559820033, 5710472045463, 18811007467662, 61706609086017]

cp's OEIS Frontend

A250748 Number of (n+1)X(n+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction.

Table of values

List of values