Indices of primes appearing in A038562.

Terms

a(0) =1a(1) =4a(2) =8a(3) =12a(4) =34a(5) =36a(6) =38a(7) =40a(8) =42a(9) =46a(10) =50a(11) =78a(12) =80a(13) =82a(14) =94a(15) =102a(16) =106a(17) =108a(18) =110a(19) =112a(20) =120a(21) =140a(22) =146a(23) =148a(24) =152a(25) =154a(26) =228a(27) =232a(28) =260a(29) =262