Distribute the primes into groups in ascending order, with the n-th group having prime(n) elements. Then a(n) is the sum of the numbers in the n-th group times the number of elements in the group.
A320228
Distribute the primes into groups in ascending order, with the n-th group having prime(n) elements. Then a(n) is the sum of the numbers in the n-th group times the number of elements in the group.
Terms
- a(0) =10a(1) =69a(2) =505a(3) =2177a(4) =10241a(5) =24635a(6) =65875a(7) =120631a(8) =244789a(9) =531715a(10) =802063a(11) =1464941a(12) =2279887a(13) =3065943a(14) =4444273a(15) =6747695a(16) =9882205a(17) =12447843a(18) =17304961a(19) =22371177a(20) =26991677a(21) =35679165a(22) =44240245a(23) =56968633a(24) =75590451a(25) =91181689a(26) =104420885a(27) =124020811a(28) =141249939a(29) =164746655
External references
- oeis: A320228