A241431 - cp's OEIS frontend

A241431 Number of nX4 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 zero plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4.

n	a(n)
1	7
2	21
3	74
4	515
5	1527
6	5304
7	20690
8	61348
9	257119
10	920918
11	3090540
12	12030044
13	40508800
14	149637207
15	549347596
16	1879652737
17	7032173983
18	24856568624
19	88496458840
20	325227255990
21	1142461364583
22	4148471540343
23	14938347230115

[7, 21, 74, 515, 1527, 5304, 20690, 61348, 257119, 920918, 3090540, 12030044, 40508800, 149637207, 549347596, 1879652737, 7032173983, 24856568624, 88496458840, 325227255990, 1142461364583, 4148471540343, 14938347230115]

cp's OEIS Frontend

A241431 Number of nX4 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 zero plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4.

Table of values

List of values