Number of maximal subsets of {1..n} containing no products of distinct elements.

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =2a(5) =2a(6) =4a(7) =4a(8) =6a(9) =6a(10) =10a(11) =10a(12) =14a(13) =14a(14) =24a(15) =28a(16) =32a(17) =32a(18) =62a(19) =62a(20) =92a(21) =102a(22) =184a(23) =184a(24) =254a(25) =254a(26) =474a(27) =506a(28) =686a(29) =686