a(n) = prime(n)^2 - n.

Terms

a(0) =3a(1) =7a(2) =22a(3) =45a(4) =116a(5) =163a(6) =282a(7) =353a(8) =520a(9) =831a(10) =950a(11) =1357a(12) =1668a(13) =1835a(14) =2194a(15) =2793a(16) =3464a(17) =3703a(18) =4470a(19) =5021a(20) =5308a(21) =6219a(22) =6866a(23) =7897a(24) =9384a(25) =10175a(26) =10582a(27) =11421a(28) =11852a(29) =12739