Denominator of 1*2*4*6*...*(prime(n-1)-1) / (2*3*5*7*...*prime(n-1)).

A060753

Denominator of 1*2*4*6*...*(prime(n-1)-1) / (2*3*5*7*...*prime(n-1)).

Terms

    a(0) =1a(1) =2a(2) =3a(3) =15a(4) =35a(5) =77a(6) =1001a(7) =17017a(8) =323323a(9) =676039a(10) =2800733a(11) =86822723a(12) =3212440751a(13) =131710070791

External references