A240155 - cp's OEIS frontend

A240155 Number of 3Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the 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	11
3	20
4	107
5	186
6	450
7	1641
8	2788
9	8018
10	23175
11	45126
12	134673
13	357608
14	737260
15	2166386
16	5505921
17	11966760
18	34560626
19	85121623
20	194751022
21	548083132
22	1325791556
23	3156785846
24	8660504920
25	20790818391
26	50929828270
27	136560783094

[4, 11, 20, 107, 186, 450, 1641, 2788, 8018, 23175, 45126, 134673, 357608, 737260, 2166386, 5505921, 11966760, 34560626, 85121623, 194751022, 548083132, 1325791556, 3156785846, 8660504920, 20790818391, 50929828270, 136560783094]

cp's OEIS Frontend

A240155 Number of 3Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the 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