A221663 - cp's OEIS frontend

A221663 Sum of neighbor maps: number of nX2 binary arrays indicating the locations of corresponding elements equal to the sum mod 3 of their horizontal, diagonal and antidiagonal neighbors in a random 0..2 nX2 array.

n	a(n)
1	2
2	12
3	48
4	256
5	856
6	4096
7	15872
8	65344
9	259584
10	1048576
11	4177632
12	16777216
13	67051520
14	268430336
15	1073479680
16	4294967296
17	17178580480
18	68719476736
19	274872664064
20	1099511513088
21	4398023442432
22	17592186044416
23	70368641459200

[2, 12, 48, 256, 856, 4096, 15872, 65344, 259584, 1048576, 4177632, 16777216, 67051520, 268430336, 1073479680, 4294967296, 17178580480, 68719476736, 274872664064, 1099511513088, 4398023442432, 17592186044416, 70368641459200]

cp's OEIS Frontend

A221663 Sum of neighbor maps: number of nX2 binary arrays indicating the locations of corresponding elements equal to the sum mod 3 of their horizontal, diagonal and antidiagonal neighbors in a random 0..2 nX2 array.

Table of values

List of values