a(n) = largest prime <= n*prime(n).

Terms

a(0) =2a(1) =5a(2) =13a(3) =23a(4) =53a(5) =73a(6) =113a(7) =151a(8) =199a(9) =283a(10) =337a(11) =443a(12) =523a(13) =601a(14) =701a(15) =839a(16) =997a(17) =1097a(18) =1259a(19) =1409a(20) =1531a(21) =1733a(22) =1907a(23) =2131a(24) =2423a(25) =2621a(26) =2777a(27) =2971a(28) =3137a(29) =3389