Number of nX3 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,1) or (-1,-2) and new values introduced in order 0..2.
A275347
Number of nX3 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,1) or (-1,-2) and new values introduced in order 0..2.
Terms
- a(0) =5a(1) =81a(2) =288a(3) =1024a(4) =4100a(5) =16956a(6) =70272a(7) =291320a(8) =1211092a(9) =5070832a(10) =21255328a(11) =89170864a(12) =374453028a(13) =1574982464a(14) =6627474512a(15) =27898519192a(16) =117476409700a(17) =494869331248
External references
- oeis: A275347