Numerator of b(n) = Sum_{k'<=n} 1/k', where k' denotes the squarefree numbers.

Terms

a(0) =1a(1) =3a(2) =11a(3) =11a(4) =61a(5) =11a(6) =82a(7) =82a(8) =82a(9) =171a(10) =1951a(11) =1951a(12) =26133a(13) =13424a(14) =41273a(15) =41273a(16) =716656a(17) =716656a(18) =13871719a(19) =13871719a(20) =4700888a(21) =9548741a(22) =222854273a(23) =222854273a(24) =222854273a(25) =112857219a(26) =112857219a(27) =112857219a(28) =3310041496a(29) =20075905417