Number of nX6 integer arrays with each element equal to the number of horizontal and antidiagonal neighbors equal to itself.

A266010

Number of nX6 integer arrays with each element equal to the number of horizontal and antidiagonal neighbors equal to itself.

Terms

    a(0) =2a(1) =1a(2) =18a(3) =61a(4) =154a(5) =473a(6) =1561a(7) =4909a(8) =15560a(9) =49716a(10) =158446a(11) =505111a(12) =1610417a(13) =5134905a(14) =16372772a(15) =52204960a(16) =166458078a(17) =530758391a(18) =1692351797a(19) =5396146261a(20) =17205878204a(21) =54861813048a(22) =174929641642a(23) =557771939947

External references