Number of (n+2)X(7+2) 0..2 arrays with every consecutive three elements in every row, column, diagonal and antidiagonal having exactly two distinct values, and new values 0 upwards introduced in row major order.
A252860
Number of (n+2)X(7+2) 0..2 arrays with every consecutive three elements in every row, column, diagonal and antidiagonal having exactly two distinct values, and new values 0 upwards introduced in row major order.
Terms
- a(0) =29241a(1) =9936a(2) =12762a(3) =26766a(4) =58644a(5) =126306a(6) =275598a(7) =596250a(8) =1300068a(9) =2826126a(10) =6150222a(11) =13372920a(12) =29103120a(13) =63319122a(14) =137750292a(15) =299686752a(16) =652050702a(17) =1418684886a(18) =3086460666a(19) =6715111032a(20) =14610041622a(21) =31786923600a(22) =69157031958
External references
- oeis: A252860