Lesser of twin self primes, i.e., smaller member of the pair of self primes differing by 2.

Terms

a(0) =3a(1) =5a(2) =18521a(3) =19421a(4) =39827a(5) =44621a(6) =49121a(7) =57221a(8) =59627a(9) =65927a(10) =84221a(11) =86627a(12) =129221a(13) =139121a(14) =149627a(15) =153521a(16) =172421a(17) =182927a(18) =207521a(19) =209927a(20) =231821a(21) =238727a(22) =251621a(23) =254927a(24) =264827a(25) =274121a(26) =277427a(27) =289127a(28) =308927a(29) =317321