A239406 - cp's OEIS frontend

A239406 Number of 2 X n 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of the elements above it, modulo 4.

n	a(n)
1	5
2	23
3	105
4	478
5	2165
6	9811
7	44399
8	201006
9	909679
10	4117547
11	18635613
12	84347726
13	381758761
14	1727876419
15	7820451787
16	35395951502
17	160204196803
18	725095175067
19	3281826924665
20	14853766696750
21	67229111585533
22	304283379907315

[5, 23, 105, 478, 2165, 9811, 44399, 201006, 909679, 4117547, 18635613, 84347726, 381758761, 1727876419, 7820451787, 35395951502, 160204196803, 725095175067, 3281826924665, 14853766696750, 67229111585533, 304283379907315]

cp's OEIS Frontend

A239406 Number of 2 X n 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of the elements above it, modulo 4.

Table of values

List of values