The sum of all odd numbers from 2*n-1 to prime(n).

Terms

a(0) =1a(1) =3a(2) =5a(3) =7a(4) =20a(5) =24a(6) =45a(7) =51a(8) =80a(9) =144a(10) =156a(11) =240a(12) =297a(13) =315a(14) =380a(15) =504a(16) =644a(17) =672a(18) =832a(19) =935a(20) =969a(21) =1159a(22) =1280a(23) =1496a(24) =1825a(25) =1976a(26) =2028a(27) =2187a(28) =2241a(29) =2408