A220550 - cp's OEIS frontend

A220550 Number of ways to reciprocally link elements of an nX5 array either to themselves or to exactly one horizontal, vertical or antidiagonal neighbor.

n	a(n)
1	8
2	401
3	14556
4	565061
5	21668208
6	832899775
7	32001129185
8	1229633337183
9	47247493674864
10	1815445803499208
11	69756959373004005
12	2680352078247056300
13	102990256079543046348
14	3957313286001327139326
15	152056408321267850998276

[8, 401, 14556, 565061, 21668208, 832899775, 32001129185, 1229633337183, 47247493674864, 1815445803499208, 69756959373004005, 2680352078247056300, 102990256079543046348, 3957313286001327139326, 152056408321267850998276]

cp's OEIS Frontend

A220550 Number of ways to reciprocally link elements of an nX5 array either to themselves or to exactly one horizontal, vertical or antidiagonal neighbor.

Table of values

List of values