a(n) is the minimal product of a positive integer sequence of length n with no duplicate substrings of length greater than 1, and every number different from its neighbors.
A282169
a(n) is the minimal product of a positive integer sequence of length n with no duplicate substrings of length greater than 1, and every number different from its neighbors.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =6a(4) =6a(5) =24a(6) =24a(7) =120a(8) =120a(9) =576a(10) =720a(11) =2880a(12) =4320a(13) =17280a(14) =30240a(15) =120960a(16) =241920a(17) =967680a(18) =1935360a(19) =8709120a(20) =17418240a(21) =87091200a(22) =174182400a(23) =870912000a(24) =1741824000a(25) =9580032000a(26) =19160064000a(27) =104509440000a(28) =229920768000
External references
- oeis: A282169