Smallest lesser of twin primes (A001359) with index n, or a(n)=0, if there are no such twin primes.

Terms

a(0) =3a(1) =11a(2) =29a(3) =59a(4) =137a(5) =101a(6) =2309a(7) =1151a(8) =521a(9) =1427a(10) =1229a(11) =419a(12) =5849a(13) =3119a(14) =5417a(15) =10271a(16) =1607a(17) =9629a(18) =1019a(19) =809a(20) =13217a(21) =9239a(22) =15581a(23) =8819a(24) =29021a(25) =84059a(26) =13679a(27) =18911a(28) =14867a(29) =45119