Positive integers whose canonical prime factorization p_1^e_1*...*p_r^e_r satisfies that {p_1, ..., p_r, e_1, ..., e_r} is a set of 2*r consecutive integers.

A392047

Positive integers whose canonical prime factorization p_1^e_1*...*p_r^e_r satisfies that {p_1, ..., p_r, e_1, ..., e_r} is a set of 2*r consecutive integers.

Terms

    a(0) =2a(1) =8a(2) =9a(3) =48a(4) =81a(5) =162a(6) =625a(7) =2000a(8) =2025a(9) =2592a(10) =3888a(11) =5000a(12) =5625a(13) =15625a(14) =25920a(15) =58320a(16) =117649a(17) =120000a(18) =455625a(19) =750000a(20) =911250a(21) =1265625a(22) =2531250a(23) =5764801a(24) =13720000a(25) =19208000a(26) =22325625a(27) =37340352a(28) =37515625a(29) =43758225

External references