A250751 - cp's OEIS frontend

A250751 Number of (n+1) X (4+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	203
2	663
3	2123
4	6663
5	20603
6	63063
7	191723
8	580263
9	1751003
10	5273463
11	15861323
12	47665863
13	143161403
14	429811863
15	1290090923
16	3871583463
17	11617371803
18	34857358263
19	104582560523
20	313768653063
21	941347902203
22	2824127592663

[203, 663, 2123, 6663, 20603, 63063, 191723, 580263, 1751003, 5273463, 15861323, 47665863, 143161403, 429811863, 1290090923, 3871583463, 11617371803, 34857358263, 104582560523, 313768653063, 941347902203, 2824127592663]

cp's OEIS Frontend

A250751 Number of (n+1) X (4+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