a(n) = p^2*(p^2+2*p-1)/2, where p = prime(n).

Terms

a(0) =14a(1) =63a(2) =425a(3) =1519a(4) =8591a(5) =16393a(6) =46529a(7) =71839a(8) =151823a(9) =377609a(10) =491071a(11) =987049a(12) =1480961a(13) =1787983a(14) =2542559a(15) =4092713a(16) =6262319a(17) =7148041a(18) =10374079a(19) =13061231a(20) =14585473a(21) =19964959a(22) =24297503a(23) =32072129a(24) =45172609a(25) =53055401a(26) =57362863a(27) =66759119a(28) =71868169a(29) =82960193