Number of subsets of {2...n} containing every element of {2...n} whose prime indices all belong to the subset.

A324737

Number of subsets of {2...n} containing every element of {2...n} whose prime indices all belong to the subset.

Terms

    a(0) =1a(1) =2a(2) =3a(3) =6a(4) =8a(5) =16a(6) =24a(7) =48a(8) =84a(9) =168a(10) =216a(11) =432a(12) =648a(13) =1296a(14) =2448a(15) =4896a(16) =6528a(17) =13056a(18) =19584a(19) =39168a(20) =77760a(21) =155520a(22) =229248a(23) =458496a(24) =790272a(25) =1580544a(26) =3128832a(27) =6257664a(28) =9386496a(29) =18772992

External references