a(n) = (prime(n)^4 - 1) / 240.

Terms

a(0) =10a(1) =61a(2) =119a(3) =348a(4) =543a(5) =1166a(6) =2947a(7) =3848a(8) =7809a(9) =11774a(10) =14245a(11) =20332a(12) =32877a(13) =50489a(14) =57691a(15) =83963a(16) =105882a(17) =118326a(18) =162292a(19) =197743a(20) =261426a(21) =368872a(22) =433585a(23) =468962a(24) =546165a(25) =588159a(26) =679364a(27) =1083936a(28) =1227083a(29) =1467814