a(n) is smallest number m such that m = n*pi(m), where pi(k) = number of primes <= k (A000720).

A038625

a(n) is smallest number m such that m = n*pi(m), where pi(k) = number of primes <= k (A000720).

Terms

    a(0) =2a(1) =27a(2) =96a(3) =330a(4) =1008a(5) =3059a(6) =8408a(7) =23526a(8) =64540a(9) =175197a(10) =480852a(11) =1304498a(12) =3523884a(13) =9557955a(14) =25874752a(15) =70115412a(16) =189961182a(17) =514272411a(18) =1394193580a(19) =3779849598a(20) =10246935644a(21) =27788566029a(22) =75370121160a(23) =204475052375a(24) =554805820452

External references