a(n) is the minimal product of a positive integer sequence of length n with no duplicate substrings (forward or backward) of length greater than 1.

A282193

a(n) is the minimal product of a positive integer sequence of length n with no duplicate substrings (forward or backward) of length greater than 1.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =4a(4) =6a(5) =12a(6) =36a(7) =96a(8) =240a(9) =480a(10) =1440a(11) =5760a(12) =17280a(13) =40320a(14) =120960a(15) =483840a(16) =1935360a(17) =5806080a(18) =17418240a(19) =69672960a(20) =348364800a(21) =1045094400a(22) =3832012800a(23) =15328051200a(24) =76640256000a(25) =229920768000a(26) =919683072000

External references