A241307 - cp's OEIS frontend

A241307 Number of 2Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the elements above it or zero 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	5
2	6
3	15
4	25
5	40
6	89
7	121
8	237
9	390
10	682
11	1250
12	2069
13	3698
14	6352
15	11013
16	19408
17	33478
18	58524
19	101542
20	176797
21	307761
22	535313
23	932344
24	1620570
25	2821554
26	4908976
27	8540842
28	14866293
29	25861744
30	45006289
31	78311151
32	136266311
33	237120535

[5, 6, 15, 25, 40, 89, 121, 237, 390, 682, 1250, 2069, 3698, 6352, 11013, 19408, 33478, 58524, 101542, 176797, 307761, 535313, 932344, 1620570, 2821554, 4908976, 8540842, 14866293, 25861744, 45006289, 78311151, 136266311, 237120535]

cp's OEIS Frontend

A241307 Number of 2Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the elements above it or zero 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