A220936 - cp's OEIS frontend

A220936 Equals two maps: number of 2Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..2 2Xn array.

n	a(n)
1	1
2	4
3	16
4	52
5	200
6	792
7	3080
8	12164
9	47827
10	188078
11	739654
12	2908308
13	11433623
14	44951623
15	176719636
16	694738324
17	2731215010
18	10737125607
19	42210368413
20	165939449883
21	652348443363
22	2564539277676
23	10081819289214
24	39634040551712

[1, 4, 16, 52, 200, 792, 3080, 12164, 47827, 188078, 739654, 2908308, 11433623, 44951623, 176719636, 694738324, 2731215010, 10737125607, 42210368413, 165939449883, 652348443363, 2564539277676, 10081819289214, 39634040551712]

cp's OEIS Frontend

A220936 Equals two maps: number of 2Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..2 2Xn array.

Table of values

List of values