A250806 - cp's OEIS frontend

A250806 Number of (n+1) X (2+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	100
2	379
3	1315
4	4321
5	13735
6	42769
7	131455
8	400681
9	1214695
10	3669409
11	11058895
12	33278041
13	100036855
14	300516049
15	902359135
16	2708699401
17	8129342215
18	24394514689
19	73196520175
20	219615512761
21	658898442775
22	1976799137329

[100, 379, 1315, 4321, 13735, 42769, 131455, 400681, 1214695, 3669409, 11058895, 33278041, 100036855, 300516049, 902359135, 2708699401, 8129342215, 24394514689, 73196520175, 219615512761, 658898442775, 1976799137329]

cp's OEIS Frontend

A250806 Number of (n+1) X (2+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