A240272 - cp's OEIS frontend

A240272 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 one plus the sum of the elements diagonally to its northwest, modulo 4.

n	a(n)
1	3
2	7
3	35
4	157
5	713
6	3263
7	14895
8	68101
9	311509
10	1424689
11	6516312
12	29807450
13	136351053
14	623728103
15	2853225545
16	13052077767
17	59706884718
18	273130241113
19	1249440509707
20	5715597380517
21	26146153523610
22	119606300969406

[3, 7, 35, 157, 713, 3263, 14895, 68101, 311509, 1424689, 6516312, 29807450, 136351053, 623728103, 2853225545, 13052077767, 59706884718, 273130241113, 1249440509707, 5715597380517, 26146153523610, 119606300969406]

cp's OEIS Frontend

A240272 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 one plus the sum of the elements diagonally to its northwest, modulo 4.

Table of values

List of values