A241358 - cp's OEIS frontend

A241358 Number of 3 X n 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 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	3
3	19
4	51
5	61
6	230
7	641
8	960
9	3746
10	9339
11	16659
12	60981
13	137870
14	288484
15	962239
16	2106198
17	4825844
18	14944563
19	32681302
20	79714689
21	232184355
22	513198469
23	1304385350
24	3611732771
25	8129991862
26	21132067461
27	56282787035
28	129448737499

[4, 3, 19, 51, 61, 230, 641, 960, 3746, 9339, 16659, 60981, 137870, 288484, 962239, 2106198, 4825844, 14944563, 32681302, 79714689, 232184355, 513198469, 1304385350, 3611732771, 8129991862, 21132067461, 56282787035, 129448737499]

cp's OEIS Frontend

A241358 Number of 3 X n 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 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