Number of subsets of {2..n} containing the product of any set of distinct elements whose product is <= n.

A308542

Number of subsets of {2..n} containing the product of any set of distinct elements whose product is <= n.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =8a(4) =16a(5) =28a(6) =56a(7) =100a(8) =200a(9) =364a(10) =728a(11) =1184a(12) =2368a(13) =4448a(14) =8056a(15) =15008a(16) =30016a(17) =52736a(18) =105472a(19) =183424a(20) =339840a(21) =663616a(22) =1327232a(23) =2217088a(24) =4434176a(25) =8744320a(26) =16559168a(27) =30034624a(28) =60069248a(29) =103402112

External references