A220387 - cp's OEIS frontend

A220387 Majority value maps: number of 2Xn binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal and antidiagonal neighbors in a random 0..1 2Xn array.

n	a(n)
1	1
2	7
3	25
4	79
5	278
6	966
7	3362
8	11642
9	40375
10	140102
11	486191
12	1686966
13	5853300
14	20309556
15	70470311
16	244518242
17	848429087
18	2943877082
19	10214660764
20	35442822154
21	122979474647
22	426714063696
23	1480612045993
24	5137426278616

[1, 7, 25, 79, 278, 966, 3362, 11642, 40375, 140102, 486191, 1686966, 5853300, 20309556, 70470311, 244518242, 848429087, 2943877082, 10214660764, 35442822154, 122979474647, 426714063696, 1480612045993, 5137426278616]

cp's OEIS Frontend

A220387 Majority value maps: number of 2Xn binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal and antidiagonal neighbors in a random 0..1 2Xn array.

Table of values

List of values