A220566 - cp's OEIS frontend

A220566 Number of ways to reciprocally link elements of an 5Xn array either to themselves or to exactly one horizontal or antidiagonal neighbor.

n	a(n)
1	1
2	89
3	1332
4	36640
5	810778
6	19333688
7	449429440
8	10536960271
9	246344047375
10	5764617097479
11	134855487893714
12	3155067573838299
13	73813420827751321
14	1726896241431387347
15	40401344327635974032
16	945204561717125804080

[1, 89, 1332, 36640, 810778, 19333688, 449429440, 10536960271, 246344047375, 5764617097479, 134855487893714, 3155067573838299, 73813420827751321, 1726896241431387347, 40401344327635974032, 945204561717125804080]

cp's OEIS Frontend

A220566 Number of ways to reciprocally link elements of an 5Xn array either to themselves or to exactly one horizontal or antidiagonal neighbor.

Table of values

List of values