Number of subsets of {1..n} (including empty set) such that the pairwise LCMs of elements are all distinct.

A196721

Number of subsets of {1..n} (including empty set) such that the pairwise LCMs of elements are all distinct.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =8a(4) =14a(5) =28a(6) =42a(7) =84a(8) =132a(9) =236a(10) =352a(11) =704a(12) =920a(13) =1840a(14) =2736a(15) =3816a(16) =5700a(17) =11400a(18) =15384a(19) =30768a(20) =39552a(21) =54656a(22) =81672a(23) =163344a(24) =196176a(25) =362656a(26) =542304a(27) =930352a(28) =1195168a(29) =2390336

External references