Number of maximal subsets of {1..n} such that every pair of distinct elements has a different quotient.

A325861

Number of maximal subsets of {1..n} such that every pair of distinct elements has a different quotient.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =3a(6) =6a(7) =6a(8) =9a(9) =13a(10) =32a(11) =32a(12) =57a(13) =57a(14) =140a(15) =229a(16) =373a(17) =373a(18) =549a(19) =549a(20) =825a(21) =1343a(22) =3085a(23) =3085a(24) =4963a(25) =6046a(26) =13964a(27) =20096a(28) =28668a(29) =28668

External references