A220580 - cp's OEIS frontend

A220580 Equals one maps: number of 2Xn binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..1 2Xn array.

n	a(n)
1	1
2	8
3	21
4	115
5	371
6	1504
7	5240
8	19904
9	71787
10	266591
11	973703
12	3590009
13	13161398
14	48409054
15	177699822
16	653013280
17	2398088376
18	8809799868
19	32356803616
20	118855121770
21	436550962678
22	1603501078153
23	5889674104016
24	21633105877502

[1, 8, 21, 115, 371, 1504, 5240, 19904, 71787, 266591, 973703, 3590009, 13161398, 48409054, 177699822, 653013280, 2398088376, 8809799868, 32356803616, 118855121770, 436550962678, 1603501078153, 5889674104016, 21633105877502]

cp's OEIS Frontend

A220580 Equals one maps: number of 2Xn binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..1 2Xn array.

Table of values

List of values