a(n) is the smallest integer having exactly n odd square divisors (A298735).

A357450

a(n) is the smallest integer having exactly n odd square divisors (A298735).

Terms

    a(0) =1a(1) =9a(2) =81a(3) =225a(4) =6561a(5) =2025a(6) =531441a(7) =11025a(8) =50625a(9) =164025a(10) =3486784401a(11) =99225a(12) =282429536481a(13) =13286025a(14) =4100625a(15) =893025a(17) =2480625a(19) =8037225a(20) =332150625a(21) =87169610025a(23) =12006225a(24) =2562890625a(26) =121550625

External references