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

A197435

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

Terms

    a(0) =3a(1) =6a(2) =10a(3) =28a(4) =66a(5) =164a(6) =400a(7) =982a(8) =2406a(9) =5898a(10) =14456a(11) =35434a(12) =86852a(13) =212884a(14) =521802a(15) =1278994a(16) =3134954a(17) =7684116a(18) =18834610a(19) =46165692a(20) =113157168a(21) =277360614a(22) =679841246a(23) =1666365362a(24) =4084444032a(25) =10011419722a(26) =24539086364a(27) =60147988628a(28) =147429308586

External references