A269193 - OEIS

%I #4 Feb 20 2016 09:45:37

%S 8748,1008804,194596516,36068275268,6648192704604,1209655310225276,

%T 217602949665911156,38754403905072091620,6843294057789444736828,

%U 1199620248489898735000620,208983050480777152531950868

%N Number of nX7 0..3 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling three no more than once.

%C Column 7 of A269194.

%H R. H. Hardin, <a href="/A269193/b269193.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

%e ..3..1..2..3..3..2..3. .2..0..1..3..0..1..0. .1..0..2..0..1..3..0

%Y Cf. A269194.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 20 2016