Create the sequence of all positive integers > 1 that are prime or whose prime shadow (A181819) is a divisor that is already in the sequence. Then remove all the primes.

A353389

Create the sequence of all positive integers > 1 that are prime or whose prime shadow (A181819) is a divisor that is already in the sequence. Then remove all the primes.

Terms

    a(0) =9a(1) =36a(2) =125a(3) =225a(4) =441a(5) =1089a(6) =1260a(7) =1521a(8) =1980a(9) =2340a(10) =2401a(11) =2601a(12) =2772a(13) =3060a(14) =3249a(15) =3276a(16) =3420a(17) =4140a(18) =4284a(19) =4761a(20) =4788a(21) =5148a(22) =5220a(23) =5580a(24) =5796a(25) =6660a(26) =6732a(27) =7308a(28) =7380a(29) =7524

External references