A239600 - cp's OEIS frontend

A239600 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 or one plus the sum of the elements antidiagonally to its northeast, modulo 4.

n	a(n)
1	3
2	3
3	15
4	64
5	244
6	1030
7	4303
8	17923
9	75264
10	316087
11	1329006
12	5592784
13	23545716
14	99155410
15	417639459
16	1759279887
17	7411361169
18	31223344768
19	131544340291
20	554206795807
21	2334940230536
22	9837444241610
23	41446741048349
24	174622202605439

[3, 3, 15, 64, 244, 1030, 4303, 17923, 75264, 316087, 1329006, 5592784, 23545716, 99155410, 417639459, 1759279887, 7411361169, 31223344768, 131544340291, 554206795807, 2334940230536, 9837444241610, 41446741048349, 174622202605439]

cp's OEIS Frontend

A239600 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 or one plus the sum of the elements antidiagonally to its northeast, modulo 4.

Table of values

List of values