Compound filter (prime signature & sum of the divisors): a(n) = P(A046523(n), A000203(n)), where P(n,k) is sequence A000027 used as a pairing function.

A286360

Compound filter (prime signature & sum of the divisors): a(n) = P(A046523(n), A000203(n)), where P(n,k) is sequence A000027 used as a pairing function.

Terms

    a(0) =1a(1) =8a(2) =12a(3) =49a(4) =23a(5) =142a(6) =38a(7) =239a(8) =124a(9) =259a(10) =80a(11) =753a(12) =107a(13) =412a(14) =412a(15) =1051a(16) =173a(17) =1237a(18) =212a(19) =1390a(20) =672a(21) =826a(22) =302a(23) =3427a(24) =565a(25) =1087a(26) =1089a(27) =2223a(28) =467a(29) =5080

External references