A250854 - cp's OEIS frontend

A250854 Number of (2+1) X (n+1) 0..3 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	543
2	2457
3	8037
4	21436
5	49599
6	103293
7	198297
8	356752
9	608671
10	993609
11	1562493
12	2379612
13	3524767
14	5095581
15	7209969
16	10008768
17	13658527
18	18354457
19	24323541
20	31827804
21	41167743
22	52685917
23	66770697
24	83860176
25	104446239
26	129078793

[543, 2457, 8037, 21436, 49599, 103293, 198297, 356752, 608671, 993609, 1562493, 2379612, 3524767, 5095581, 7209969, 10008768, 13658527, 18354457, 24323541, 31827804, 41167743, 52685917, 66770697, 83860176, 104446239, 129078793]

cp's OEIS Frontend

A250854 Number of (2+1) X (n+1) 0..3 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