A250815 - cp's OEIS frontend

A250815 Number of (3+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	432
2	1315
3	3081
4	6171
5	11116
6	18537
7	29145
8	43741
9	63216
10	88551
11	120817
12	161175
13	210876
14	271261
15	343761
16	429897
17	531280
18	649611
19	786681
20	944371
21	1124652
22	1329585
23	1561321
24	1822101
25	2114256
26	2440207
27	2802465
28	3203631
29	3646396
30	4133541
31	4667937

[432, 1315, 3081, 6171, 11116, 18537, 29145, 43741, 63216, 88551, 120817, 161175, 210876, 271261, 343761, 429897, 531280, 649611, 786681, 944371, 1124652, 1329585, 1561321, 1822101, 2114256, 2440207, 2802465, 3203631, 3646396, 4133541, 4667937]

cp's OEIS Frontend

A250815 Number of (3+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