Number of subsets of {1, 2, ..., n} containing n and having pairwise coprime elements; also row sums of A186972.

A186973

Number of subsets of {1, 2, ..., n} containing n and having pairwise coprime elements; also row sums of A186972.

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) =248a(13) =48a(14) =72a(15) =112a(16) =728a(17) =64a(18) =1520a(19) =192a(20) =384a(21) =256a(22) =3872a(23) =256a(24) =3168a(25) =736a(26) =2752a(27) =832a(28) =15488a(29) =256

External references