A250677 - cp's OEIS frontend

A250677 Number of (1+1) X (n+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	104
2	669
3	3927
4	22119
5	120233
6	637948
7	3321772
8	17052553
9	86573591
10	435717423
11	2177845221
12	10825761528
13	53576004128
14	264200974309
15	1299108852679
16	6372932446759
17	31203614429489
18	152543921033076
19	744788303718996

[104, 669, 3927, 22119, 120233, 637948, 3321772, 17052553, 86573591, 435717423, 2177845221, 10825761528, 53576004128, 264200974309, 1299108852679, 6372932446759, 31203614429489, 152543921033076, 744788303718996]

cp's OEIS Frontend

A250677 Number of (1+1) X (n+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