Number of 3Xn 0..2 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
A281328
Number of 3Xn 0..2 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
Terms
- a(0) =0a(1) =28a(2) =1266a(3) =21734a(4) =350818a(5) =5192104a(6) =73653131a(7) =1013236400a(8) =13637005631a(9) =180509743938
External references
- oeis: A281328