A240042 - cp's OEIS frontend

A240042 Number of nX3 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	4
2	9
3	26
4	93
5	309
6	1043
7	3597
8	12865
9	45491
10	163686
11	584594
12	2103512
13	7548847
14	27174662
15	97768996
16	352008043
17	1267200666
18	4563053012
19	16431815183
20	59173883901
21	213095423135
22	767419010967
23	2763770574117
24	9953309109574

[4, 9, 26, 93, 309, 1043, 3597, 12865, 45491, 163686, 584594, 2103512, 7548847, 27174662, 97768996, 352008043, 1267200666, 4563053012, 16431815183, 59173883901, 213095423135, 767419010967, 2763770574117, 9953309109574]

cp's OEIS Frontend

A240042 Number of nX3 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