The number of positive integer sequences of length n with no duplicate substrings (forward or backward) of length greater than 1, no self-adjacent terms, and a minimal product (= A282170(n)).
A284436
The number of positive integer sequences of length n with no duplicate substrings (forward or backward) of length greater than 1, no self-adjacent terms, and a minimal product (= A282170(n)).
Terms
- a(0) =1a(1) =2a(2) =6a(3) =2a(4) =18a(5) =12a(6) =24a(7) =24a(8) =792a(9) =240a(10) =1440a(11) =720a(12) =7488a(13) =10080a(14) =16992a(15) =40320a(16) =1013760a(17) =725760a(18) =979200a(19) =3628800a(20) =17902080a(21) =79833600a(22) =89510400a(23) =479001600a(24) =1988582400a(25) =11446272000a(26) =11931494400a(27) =108138240000a(28) =312309043200
External references
- oeis: A284436