# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a192487 Showing 1-1 of 1 %I A192487 #7 Mar 07 2022 14:22:43 %S A192487 1,4,32,504,15704,967040,117706400,28318463392,13466466727872, %T A192487 12657620455508224,23516077513008447744,86355918572493456505728, %U A192487 626806864356196966410513920,8992693476394949632573847880832 %N A192487 Half the number of n X n X n triangular binary arrays with every element equal to at most 5 neighbors. %H A192487 R. H. Hardin, Table of n, a(n) for n = 1..19 %e A192487 Some solutions for 5 X 5 X 5 with a(1,1) = 0 %e A192487 ......0..........0..........0..........0..........0..........0..........0 %e A192487 .....0.0........0.0........0.0........1.0........0.1........0.0........1.0 %e A192487 ....0.1.1......0.1.1......0.1.1......0.1.0......1.1.1......1.0.0......0.0.1 %e A192487 ...1.1.1.1....1.0.1.1....0.0.1.1....1.1.0.0....1.0.1.1....1.1.0.0....1.0.0.1 %e A192487 ..0.1.0.1.0..1.0.0.1.0..1.0.0.0.0..1.0.1.0.0..1.0.1.0.0..0.0.1.1.0..0.0.0.1.1 %K A192487 nonn %O A192487 1,2 %A A192487 _R. H. Hardin_, Jul 02 2011 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE