Numbers that are divisible by the squares of two distinct primes and whose arithmetic derivative (A003415) is a squarefree number of the form 4k+2.
A368697
Numbers that are divisible by the squares of two distinct primes and whose arithmetic derivative (A003415) is a squarefree number of the form 4k+2.
Terms
- a(0) =11025a(1) =17325a(2) =27225a(3) =28665a(4) =29925a(5) =36225a(6) =37485a(7) =38025a(8) =40425a(9) =47025a(10) =48825a(11) =49725a(12) =53361a(13) =56925a(14) =63525a(15) =63945a(16) =65025a(17) =69825a(18) =70785a(19) =74025a(20) =74529a(21) =76725a(22) =81225a(23) =81585a(24) =84525a(25) =84825a(26) =88725a(27) =90405a(28) =92169a(29) =92565
External references
- oeis: A368697