Numbers k such that k and k + 1 are both of the form p*q^4 where p and q are distinct primes.

Terms

a(0) =2511a(1) =7856a(2) =10287a(3) =15471a(4) =15632a(5) =18063a(6) =20816a(7) =28592a(8) =36368a(9) =40816a(10) =54512a(11) =75248a(12) =88047a(13) =93231a(14) =101168a(15) =126927a(16) =134703a(17) =160624a(18) =163376a(19) =170991a(20) =178767a(21) =210032a(22) =215216a(23) =217808a(24) =220624a(25) =254096a(26) =256527a(27) =274671a(28) =280624a(29) =292976