%I #7 Apr 05 2018 04:09:47
%S 2,10,29,89,353,941,3316,12016,34060,120940,415304,1257949,4395268,
%T 14710881,46444038,159674287,528683443,1709740974,5804427370,
%U 19154720511,62771586925,211230338251,697032878924,2300170434527,7695594400341
%N Number of n X 4 0..1 arrays with every element equal to 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
%C Column 4 of A302278.
%H R. H. Hardin, <a href="/A302274/b302274.txt">Table of n, a(n) for n = 1..210</a>
%H R. H. Hardin, <a href="/A302274/a302274.txt">Empirical recurrence of order 72</a>
%F Empirical recurrence of order 72 (see link above)
%e Some solutions for n=5:
%e 0 0 1 1 0 1 0 1 0 0 1 0 0 0 1 0 0 1 1 1
%e 1 0 0 1 1 0 1 0 1 1 0 1 1 1 0 0 0 0 1 0
%e 0 1 0 1 1 0 1 0 1 0 1 0 0 1 0 0 0 0 0 0
%e 0 0 1 1 0 1 0 1 1 1 1 1 0 0 1 0 1 1 0 1
%e 0 0 1 1 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 0
%Y Cf. A302278.
%K nonn
%O 1,1
%A _R. H. Hardin_, Apr 04 2018