a(n)=A085956(3n).

Terms

a(0) =13a(1) =61a(2) =127a(3) =73a(4) =61a(5) =397a(6) =211a(7) =97a(8) =163a(9) =181a(10) =463a(11) =5689a(12) =547a(13) =1093a(14) =271a(15) =673a(16) =1123a(17) =10909a(18) =229a(19) =241a(20) =4663a(21) =661a(22) =967a(23) =1873a(24) =7951a(25) =1093a(26) =16363a(27) =5209a(28) =349a(29) =541