Nonprime numbers k such that (k+1)*Sum_{d|k} 1/(d+1) is an integer.

Terms

a(0) =1a(1) =10a(2) =55a(3) =161a(4) =209a(5) =551a(6) =649a(7) =1079a(8) =1189a(9) =3401a(10) =6049a(11) =6319a(12) =9701a(13) =12151a(14) =14279a(15) =14849a(16) =25271a(17) =34399a(18) =40753a(19) =51841a(20) =64769a(21) =85919a(22) =150281a(23) =158801a(24) =193159a(25) =194399a(26) =246401a(27) =286579a(28) =456191a(29) =514999