A221066 - cp's OEIS frontend

A221066 Sum of neighbor maps: number of n X 2 binary arrays indicating the locations of corresponding elements equal to the sum mod 4 of their king-move neighbors in a random 0..3 n X 2 array.

n	a(n)
1	2
2	8
3	20
4	56
5	168
6	476
7	1364
8	3952
9	11360
10	32692
11	94236
12	271352
13	781432
14	2250892
15	6482724
16	18670784
17	53775312
18	154880036
19	446074860
20	1284760776
21	3700290152
22	10657349244
23	30694667380
24	88404940816
25	254618597952
26	733337259924

[2, 8, 20, 56, 168, 476, 1364, 3952, 11360, 32692, 94236, 271352, 781432, 2250892, 6482724, 18670784, 53775312, 154880036, 446074860, 1284760776, 3700290152, 10657349244, 30694667380, 88404940816, 254618597952, 733337259924]

cp's OEIS Frontend

A221066 Sum of neighbor maps: number of n X 2 binary arrays indicating the locations of corresponding elements equal to the sum mod 4 of their king-move neighbors in a random 0..3 n X 2 array.

Table of values

List of values