Smallest prime greater than n*(n+1)^2/2.

Terms

a(0) =2a(1) =3a(2) =11a(3) =29a(4) =53a(5) =97a(6) =149a(7) =227a(8) =331a(9) =457a(10) =607a(11) =797a(12) =1019a(13) =1277a(14) =1579a(15) =1931a(16) =2333a(17) =2767a(18) =3251a(19) =3803a(20) =4421a(21) =5087a(22) =5821a(23) =6637a(24) =7507a(25) =8461a(26) =9479a(27) =10589a(28) =11777a(29) =13063