A282164 a(n) is the minimal product of a positive integer sequence of length n with no duplicate substrings of length greater than 1.
1, 1, 2, 2, 4, 6, 12, 24, 48, 120, 240, 720, 1440, 4320, 8640, 25920, 60480, 181440, 483840, 1451520, 3870720, 11612160, 34836480, 104509440, 348364800, 1045094400, 3483648000, 10450944000, 38320128000, 114960384000, 459841536000, 1379524608000, 5518098432000, 16554295296000
Offset: 1
Keywords
Examples
a(1) = 1 via [1]; a(2) = 1 via [1,1]; a(3) = 2 via [1,1,2]; a(4) = 2 via [1,1,2,1]; a(5) = 4 via [1,1,2,2,1]; a(6) = 6 via [1,1,2,1,3,1]; a(7) = 12 via [1,1,2,2,1,3,1]; a(8) = 24 via [1,1,2,1,3,1,4,1]; a(9) = 48 via [1,1,2,2,1,3,1,4,1]; a(10) = 120 via [1,1,2,1,3,1,4,1,5,1].
Links
- Peter Kagey, Table of n, a(n) for n = 1..100
Crossrefs
Product analog of A259280.
Comments