A250671 - cp's OEIS frontend

A250671 Number of (n+1)X(3+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	3927
2	42422
3	388916
4	3107446
5	22408818
6	148821788
7	923242475
8	5408914174
9	30183160828
10	161540947652
11	833948226614
12	4172559026594
13	20315088999198
14	96576921782616
15	449613162886204
16	2055003400985552
17	9241542539124820

[3927, 42422, 388916, 3107446, 22408818, 148821788, 923242475, 5408914174, 30183160828, 161540947652, 833948226614, 4172559026594, 20315088999198, 96576921782616, 449613162886204, 2055003400985552, 9241542539124820]

cp's OEIS Frontend

A250671 Number of (n+1)X(3+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