Index of the smallest prime greater than (6n+1)^2.

Terms

a(0) =1a(1) =16a(2) =40a(3) =73a(4) =115a(5) =163a(6) =220a(7) =284a(8) =358a(9) =435a(10) =520a(11) =610a(12) =706a(13) =812a(14) =924a(15) =1039a(16) =1164a(17) =1295a(18) =1424a(19) =1573a(20) =1716a(21) =1878a(22) =2033a(23) =2191a(24) =2367a(25) =2548a(26) =2730a(27) =2916a(28) =3108a(29) =3303