A239981 - cp's OEIS frontend

A239981 Number of nX3 0..3 arrays with no element equal to zero plus the sum of elements to its left or two plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.

n	a(n)
1	1
2	4
3	13
4	56
5	261
6	935
7	4113
8	16724
9	63746
10	275188
11	1085962
12	4300307
13	18095718
14	71121297
15	287888587
16	1186770242
17	4693927215
18	19155022357
19	77909148678
20	310802944863
21	1269055778212
22	5125935099711
23	20593563815344
24	83875501530044

[1, 4, 13, 56, 261, 935, 4113, 16724, 63746, 275188, 1085962, 4300307, 18095718, 71121297, 287888587, 1186770242, 4693927215, 19155022357, 77909148678, 310802944863, 1269055778212, 5125935099711, 20593563815344, 83875501530044]

cp's OEIS Frontend

A239981 Number of nX3 0..3 arrays with no element equal to zero plus the sum of elements to its left or two plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.

Table of values

List of values