A240043 - cp's OEIS frontend

A240043 Number of nX4 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of 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	6
2	20
3	72
4	346
5	1496
6	8567
7	46381
8	268672
9	1556758
10	9438166
11	56174788
12	346760638
13	2098659043
14	13032771483
15	79558734990
16	494814764391
17	3034462087200
18	18868201942704
19	116012171614159
20	720835003158134
21	4439604572498702

[6, 20, 72, 346, 1496, 8567, 46381, 268672, 1556758, 9438166, 56174788, 346760638, 2098659043, 13032771483, 79558734990, 494814764391, 3034462087200, 18868201942704, 116012171614159, 720835003158134, 4439604572498702]

cp's OEIS Frontend

A240043 Number of nX4 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of 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