A250816 - cp's OEIS frontend

A250816 Number of (4+1) X (n+1) 0..2 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	1389
2	4321
3	10233
4	20631
5	37333
6	62469
7	98481
8	148123
9	214461
10	300873
11	411049
12	548991
13	719013
14	925741
15	1174113
16	1469379
17	1817101
18	2223153
19	2693721
20	3235303
21	3854709
22	4559061
23	5355793
24	6252651
25	7257693
26	8379289
27	9626121
28	11007183

[1389, 4321, 10233, 20631, 37333, 62469, 98481, 148123, 214461, 300873, 411049, 548991, 719013, 925741, 1174113, 1469379, 1817101, 2223153, 2693721, 3235303, 3854709, 4559061, 5355793, 6252651, 7257693, 8379289, 9626121, 11007183]

cp's OEIS Frontend

A250816 Number of (4+1) X (n+1) 0..2 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