an=n-th smallest integer m=p1*p2*p3, product of 3 odd primes such that d+2m/d are all primes for d dividing 2m.

A128278

an=n-th smallest integer m=p1*p2*p3, product of 3 odd primes such that d+2m/d are all primes for d dividing 2m.

Terms

    a(0) =105a(1) =165a(2) =231a(3) =935a(4) =2109a(5) =2795a(6) =3021a(7) =3819a(8) =6981a(9) =7205a(10) =11285a(11) =12341a(12) =13101a(13) =16419a(14) =17549a(15) =19839a(16) =21749a(17) =21995a(18) =26391a(19) =31229a(20) =31269a(21) =46631a(22) =62651a(23) =63645a(24) =65391a(25) =76155a(26) =77585a(27) =100955a(28) =110811a(29) =113555

External references