A241399 - cp's OEIS frontend

A241399 Number of 3Xn 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	4
2	13
3	29
4	85
5	201
6	689
7	1929
8	4068
9	11963
10	33651
11	80035
12	231111
13	606571
14	1542322
15	4407947
16	11308092
17	29789742
18	82990169
19	213582987
20	572318731
21	1556503937
22	4056412623
23	10923983311
24	29272912317
25	77140259839
26	207516834784

[4, 13, 29, 85, 201, 689, 1929, 4068, 11963, 33651, 80035, 231111, 606571, 1542322, 4407947, 11308092, 29789742, 82990169, 213582987, 572318731, 1556503937, 4056412623, 10923983311, 29272912317, 77140259839, 207516834784]

cp's OEIS Frontend

A241399 Number of 3Xn 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