Squares of odd semiprimes A046315, odd numbers divisible by exactly 2 primes (counted with multiplicity).

A075730

Squares of odd semiprimes A046315, odd numbers divisible by exactly 2 primes (counted with multiplicity).

Terms

    a(0) =81a(1) =225a(2) =441a(3) =625a(4) =1089a(5) =1225a(6) =1521a(7) =2401a(8) =2601a(9) =3025a(10) =3249a(11) =4225a(12) =4761a(13) =5929a(14) =7225a(15) =7569a(16) =8281a(17) =8649a(18) =9025a(19) =12321a(20) =13225a(21) =14161a(22) =14641a(23) =15129a(24) =16641a(25) =17689a(26) =19881a(27) =20449a(28) =21025a(29) =24025

External references