A241249 - cp's OEIS frontend

A241249 Number of nX2 0..3 arrays with no element equal to one plus the sum of elements to its left or zero 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	3
2	5
3	17
4	39
5	87
6	212
7	488
8	1134
9	2644
10	6118
11	14205
12	32964
13	76395
14	177149
15	410798
16	952422
17	2208198
18	5120116
19	11871494
20	27525169
21	63821315
22	147978217
23	343107782
24	795547902
25	1844596244
26	4276972393
27	9916824861
28	22993686321
29	53314396437

[3, 5, 17, 39, 87, 212, 488, 1134, 2644, 6118, 14205, 32964, 76395, 177149, 410798, 952422, 2208198, 5120116, 11871494, 27525169, 63821315, 147978217, 343107782, 795547902, 1844596244, 4276972393, 9916824861, 22993686321, 53314396437]

cp's OEIS Frontend

A241249 Number of nX2 0..3 arrays with no element equal to one plus the sum of elements to its left or zero 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