A220574 - cp's OEIS frontend

A220574 Equals one maps: number of n X 3 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..1 n X 3 array.

n	a(n)
1	4
2	21
3	91
4	375
5	1487
6	5835
7	22775
8	88683
9	344975
10	1341395
11	5214791
12	20271307
13	78797247
14	306290211
15	1190562423
16	4627750267
17	17988173039
18	69920406547
19	271782019879
20	1056422029931
21	4106332901663
22	15961395217283
23	62042250575063

[4, 21, 91, 375, 1487, 5835, 22775, 88683, 344975, 1341395, 5214791, 20271307, 78797247, 306290211, 1190562423, 4627750267, 17988173039, 69920406547, 271782019879, 1056422029931, 4106332901663, 15961395217283, 62042250575063]

cp's OEIS Frontend

A220574 Equals one maps: number of n X 3 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..1 n X 3 array.

Table of values

List of values