Number of nX6 0..1 arrays with every element equal to 0, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A303323
Number of nX6 0..1 arrays with every element equal to 0, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =32a(2) =1a(3) =10a(4) =25a(5) =56a(6) =136a(7) =531a(8) =1035a(9) =3668a(10) =11020a(11) =29763a(12) =88919a(13) =263974a(14) =759319a(15) =2234940a(16) =6528470a(17) =19011183a(18) =55808342a(19) =163149056a(20) =476147024a(21) =1393878718a(22) =4076631347a(23) =11916304345a(24) =34854245923a(25) =101919861889a(26) =298028780792
External references
- oeis: A303323