Number of subsets of {1, 2, ..., n} containing n and having <=6 pairwise coprime elements.

Terms

a(0) =1a(1) =2a(2) =4a(3) =4a(4) =12a(5) =4a(6) =28a(7) =16a(8) =32a(9) =12a(10) =116a(11) =16a(12) =242a(13) =48a(14) =72a(15) =110a(16) =664a(17) =63a(18) =1228a(19) =177a(20) =353a(21) =239a(22) =2667a(23) =219a(24) =2155a(25) =599a(26) =1847a(27) =657a(28) =7665a(29) =219