A241398 - cp's OEIS frontend

A241398 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 one plus the sum of the elements antidiagonally to its northeast, modulo 4.

n	a(n)
1	3
2	5
3	9
4	23
5	44
6	93
7	204
8	368
9	761
10	1583
11	2951
12	6056
13	12244
14	23588
15	47945
16	95715
17	187731
18	378531
19	752679
20	1489014
21	2986657
22	5934705
23	11787915
24	23567455
25	46847503
26	93218990
27	186017656
28	369978815
29	736728537
30	1468604461
31	2922396725
32	5820645191

[3, 5, 9, 23, 44, 93, 204, 368, 761, 1583, 2951, 6056, 12244, 23588, 47945, 95715, 187731, 378531, 752679, 1489014, 2986657, 5934705, 11787915, 23567455, 46847503, 93218990, 186017656, 369978815, 736728537, 1468604461, 2922396725, 5820645191]

cp's OEIS Frontend

A241398 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 one plus the sum of the elements antidiagonally to its northeast, modulo 4.

Table of values

List of values