a(n) = numerator of Sum_{i=1..n} 1/A171397(i).

Terms

a(0) =1a(1) =3a(2) =11a(3) =25a(4) =137a(5) =49a(6) =363a(7) =761a(8) =7129a(9) =80939a(10) =83249a(11) =1109957a(12) =1135697a(13) =1159721a(14) =2364487a(15) =40916999a(16) =13865893a(17) =267536047a(18) =271415923a(19) =274943083a(20) =6401288429a(21) =6475652719a(22) =32735212187a(23) =33078431987a(24) =300680459483a(25) =43364113769