n-th 8k+3 prime plus n-th 8k+5 prime.

Terms

a(0) =8a(1) =24a(2) =48a(3) =80a(4) =112a(5) =128a(6) =184a(7) =216a(8) =280a(9) =296a(10) =336a(11) =360a(12) =408a(13) =456a(14) =520a(15) =560a(16) =600a(17) =648a(18) =696a(19) =752a(20) =808a(21) =840a(22) =888a(23) =952a(24) =1008a(25) =1064a(26) =1104a(27) =1176a(28) =1224a(29) =1248