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Number of 5Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 4 neighboring 1s.
1

%I #4 Jan 04 2018 22:21:15

%S 1,6,151,502,2719,11341,82549,396787,2346541,11876657,70286741,

%T 374560274,2145325624,11643190391,66070482072,363830683327,

%U 2050031109245,11362362156585,63803460702931,355097907791024,1990234603016555

%N Number of 5Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 4 neighboring 1s.

%C Row 5 of A297733.

%H R. H. Hardin, <a href="/A297737/b297737.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A297737/a297737.txt">Empirical recurrence of order 80</a>

%F Empirical recurrence of order 80 (see link above)

%e Some solutions for n=7

%e ..1..1..1..0..0..1..1. .0..1..1..0..0..1..1. .0..1..1..0..0..0..0

%e ..1..1..1..0..1..1..0. .1..1..0..0..0..1..1. .0..1..1..0..0..0..0

%e ..0..0..0..0..0..0..0. .0..0..0..1..0..0..0. .1..0..1..0..0..0..0

%e ..1..1..0..1..1..1..0. .0..0..1..1..1..0..0. .0..1..1..0..0..1..1

%e ..0..1..1..1..0..1..1. .0..0..0..0..0..0..0. .0..1..1..0..1..1..0

%Y Cf. A297733.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 04 2018