A240149 - cp's OEIS frontend

A240149 Number of nX3 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4.

n	a(n)
1	4
2	8
3	20
4	67
5	254
6	825
7	2667
8	8652
9	27929
10	91436
11	297311
12	965014
13	3135633
14	10174603
15	33030794
16	107154304
17	347714014
18	1127972498
19	3659419980
20	11870924983
21	38508782933
22	124917347816
23	405214920992
24	1314447547691
25	4263837727610

[4, 8, 20, 67, 254, 825, 2667, 8652, 27929, 91436, 297311, 965014, 3135633, 10174603, 33030794, 107154304, 347714014, 1127972498, 3659419980, 11870924983, 38508782933, 124917347816, 405214920992, 1314447547691, 4263837727610]

cp's OEIS Frontend

A240149 Number of nX3 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4.

Table of values

List of values