A297659 - OEIS

%I #4 Jan 02 2018 15:18:53

%S 1,1632,55706,1105531,46187510,1906300826,63350980838,2211348272559,

%T 81510059624659,2921136549256989,103683457156054557,

%U 3719547264451758684,133489746983350501721,4775013243230452400632,170915659747129027279021

%N Number of 6Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 3 neighboring 1s.

%C Row 6 of A297654.

%H R. H. Hardin, <a href="/A297659/b297659.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

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

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

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

%Y Cf. A297654.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 02 2018