A250685 - cp's OEIS frontend

A250685 Number of (n+1)X(2+1) 0..3 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.

n	a(n)
1	543
2	2920
3	15246
4	76320
5	362241
6	1647460
7	7249825
8	31113316
9	131014715
10	543845812
11	2233368847
12	9098214240
13	36844025643
14	148553970588
15	597082293823
16	2394504059784
17	9587995012203
18	38352450171812
19	153311305422383

[543, 2920, 15246, 76320, 362241, 1647460, 7249825, 31113316, 131014715, 543845812, 2233368847, 9098214240, 36844025643, 148553970588, 597082293823, 2394504059784, 9587995012203, 38352450171812, 153311305422383]

cp's OEIS Frontend

A250685 Number of (n+1)X(2+1) 0..3 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.

Table of values

List of values