A240413 - cp's OEIS frontend

A240413 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 zero plus the sum of the elements diagonally to its northwest, modulo 4.

n	a(n)
1	5
2	10
3	32
4	80
5	162
6	493
7	1109
8	2656
9	7235
10	16492
11	41839
12	106203
13	251488
14	640167
15	1579481
16	3845121
17	9681356
18	23735901
19	58568055
20	145990039
21	358605440
22	888720845
23	2202562818
24	5427876319
25	13455220186
26	33269176662
27	82172839773
28	203518046217

[5, 10, 32, 80, 162, 493, 1109, 2656, 7235, 16492, 41839, 106203, 251488, 640167, 1579481, 3845121, 9681356, 23735901, 58568055, 145990039, 358605440, 888720845, 2202562818, 5427876319, 13455220186, 33269176662, 82172839773, 203518046217]

cp's OEIS Frontend

A240413 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 zero plus the sum of the elements diagonally to its northwest, modulo 4.

Table of values

List of values