Numbers that are divisible by the square of an odd prime.

Terms

a(0) =9a(1) =18a(2) =25a(3) =27a(4) =36a(5) =45a(6) =49a(7) =50a(8) =54a(9) =63a(10) =72a(11) =75a(12) =81a(13) =90a(14) =98a(15) =99a(16) =100a(17) =108a(18) =117a(19) =121a(20) =125a(21) =126a(22) =135a(23) =144a(24) =147a(25) =150a(26) =153a(27) =162a(28) =169a(29) =171