a(n) is the smallest number k such that (sum of composites <= k) / (sum of primes <= k) >= n.

A364879

a(n) is the smallest number k such that (sum of composites <= k) / (sum of primes <= k) >= n.

Terms

    a(0) =2a(1) =6a(2) =10a(3) =28a(4) =126a(5) =520a(6) =1394a(7) =4440a(8) =11765a(9) =35702a(10) =98202a(11) =271718a(12) =736814a(13) =2012631a(14) =5478367a(15) =14867499a(16) =40448112a(17) =109944053a(18) =298170203a(19) =810416222a(20) =2200884471a(21) =5980529528

External references