# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a155436 Showing 1-1 of 1 %I A155436 #6 Nov 10 2024 13:01:27 %S A155436 1,7,19,37,76,284,1948,12241,60886,350497,2915669,33310308,416154595, %T A155436 5212602941,75431474711,1382363604714,31384746574285 %N A155436 Number of ways to place zero or more nonadjacent 2,0 2,1 3,0 3,2 3,3 4,1 4,2 5,1 polyhexes in any orientation on a planar nXnXn triangular grid. %e A155436 Maximal 10 X 10 X 10 example %e A155436 ............0 %e A155436 ...........0.0 %e A155436 ..........1.1.0 %e A155436 .........1.0.1.1 %e A155436 ........0.1.1.0.0 %e A155436 .......0.1.0.0.1.0 %e A155436 ......1.0.0.0.0.1.1 %e A155436 .....0.1.1.0.0.1.0.1 %e A155436 ....0.1.0.1.1.0.1.1.0 %e A155436 ...0.0.1.1.0.0.1.0.0.0 %K A155436 nonn,more,changed %O A155436 5,2 %A A155436 _R. H. Hardin_, Jan 22 2009 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE