|
%I #4 Dec 30 2017 07:00:01
%S 1,73,301,1057,12005,76692,431723,3338387,23694911,160290601,
%T 1169727060,8508584171,61149185363,447149103717,3281694474016,
%U 24037530274436,176807186467726,1303136084563758,9604835986239513,70874413268008409
%N Number of nX7 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 neighboring 1s.
%C Column 7 of A297431.
%H R. H. Hardin, <a href="/A297430/b297430.txt">Table of n, a(n) for n = 1..210</a>
%H R. H. Hardin, <a href="/A297430/a297430.txt">Empirical recurrence of order 81</a>
%F Empirical recurrence of order 81 (see link above)
%e Some solutions for n=5
%e ..0..0..1..1..0..1..1. .0..0..0..1..1..0..0. .0..0..1..0..0..0..0
%e ..0..1..1..0..0..1..1. .0..0..1..0..0..1..0. .0..1..1..1..0..1..1
%e ..0..0..0..0..0..0..0. .1..1..0..0..0..1..1. .0..0..0..0..0..1..1
%e ..0..1..0..0..0..1..1. .0..1..0..0..1..0..0. .0..1..1..1..0..0..0
%e ..1..1..1..0..0..1..1. .0..0..1..1..0..0..0. .0..0..1..0..0..0..0
%Y Cf. A297431.
%K nonn
%O 1,2
%A _R. H. Hardin_, Dec 30 2017
| 