Number of n X 1 0..2 arrays with no average of any element and its horizontal and vertical neighbors equal to one.

A200572

Number of n X 1 0..2 arrays with no average of any element and its horizontal and vertical neighbors equal to one.

Terms

    a(0) =2a(1) =6a(2) =10a(3) =22a(4) =52a(5) =114a(6) =260a(7) =600a(8) =1374a(9) =3162a(10) =7290a(11) =16796a(12) =38722a(13) =89296a(14) =205916a(15) =474882a(16) =1095218a(17) =2525902a(18) =5825564a(19) =13435770a(20) =30987588a(21) =71468368a(22) =164831598a(23) =380160714a(24) =876787090a(25) =2022186212a(26) =4663888698a(27) =10756605360a(28) =24808602932a(29) =57217567106

External references