Number of (n+2) X (1+2) 0..1 arrays with no 3 x 3 subblock diagonal sum 0 or 1 and no antidiagonal sum 0 or 1 and no row sum 1 and no column sum 1.

A256022

Number of (n+2) X (1+2) 0..1 arrays with no 3 x 3 subblock diagonal sum 0 or 1 and no antidiagonal sum 0 or 1 and no row sum 1 and no column sum 1.

Terms

    a(0) =33a(1) =68a(2) =154a(3) =352a(4) =798a(5) =1804a(6) =4086a(7) =9304a(8) =21194a(9) =48176a(10) =109506a(11) =249120a(12) =566754a(13) =1289056a(14) =2931842a(15) =6668688a(16) =15168650a(17) =34502104a(18) =78476674a(19) =178499728a(20) =406009530a(21) =923494792a(22) =2100545026a(23) =4777818256a(24) =10867446266a(25) =24718685528a(26) =56224184050

External references