Greatest k such that (k-th prime) < (10 times n-th prime).

Terms

a(0) =8a(1) =10a(2) =15a(3) =19a(4) =29a(5) =31a(6) =39a(7) =42a(8) =50a(9) =61a(10) =63a(11) =73a(12) =80a(13) =82a(14) =91a(15) =99a(16) =107a(17) =111a(18) =121a(19) =127a(20) =129a(21) =138a(22) =145a(23) =154a(24) =163a(25) =169a(26) =172a(27) =180a(28) =181a(29) =189