cp's OEIS Frontend

A202978 Number of n X 7 0..1 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.

%I A202978 #7 Dec 26 2023 23:46:58
%S A202978 1,69,3507,122468,4590696,170937904,6330398606,235362503738,
%T A202978 8754859878268,325475861455984,12099539397621289,449821095241853452,
%U A202978 16722911203146960563,621702975576594657954,23112884157721171287549
%N A202978 Number of n X 7 0..1 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.
%C A202978 Column 7 of A202979.
%H A202978 R. H. Hardin, <a href="/A202978/b202978.txt">Table of n, a(n) for n = 1..210</a>
%e A202978 Some solutions for n=3
%e A202978 ..1..1..0..1..1..0..0....0..1..1..0..1..1..1....1..1..1..1..1..1..0
%e A202978 ..1..1..0..1..1..1..1....1..1..1..0..1..1..1....1..1..1..0..1..1..1
%e A202978 ..0..0..0..0..0..1..1....1..1..1..0..0..0..0....1..1..1..1..1..1..1
%Y A202978 Cf. A202979.
%K A202978 nonn
%O A202978 1,2
%A A202978 _R. H. Hardin_, Dec 26 2011