A239859 - cp's OEIS frontend

A239859 Number of 2 X n 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of the elements above it or one 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	2
2	3
3	9
4	12
5	29
6	63
7	100
8	215
9	468
10	785
11	1654
12	3515
13	6048
14	12676
15	26381
16	46460
17	96810
18	198286
19	355994
20	737992
21	1493159
22	2724777
23	5619409
24	11263131
25	20836948
26	42752798
27	85081916
28	159218104
29	325067366
30	643478067
31	1215731399
32	2470549558
33	4871466920

[2, 3, 9, 12, 29, 63, 100, 215, 468, 785, 1654, 3515, 6048, 12676, 26381, 46460, 96810, 198286, 355994, 737992, 1493159, 2724777, 5619409, 11263131, 20836948, 42752798, 85081916, 159218104, 325067366, 643478067, 1215731399, 2470549558, 4871466920]

cp's OEIS Frontend

A239859 Number of 2 X n 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of the elements above it or one 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