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n, 8*n+9, 64*n+81, 512*n+657, 4096*n+5265 and 32768*n+42129 are primes. [From Vincenzo Librandi, Aug 05 2010]
Table of n, a(n) for n=1..24.
(MAGMA) [n: n in [1..19000000] | IsPrime(n) and IsPrime(8*n+9) and IsPrime(64*n+81) and IsPrime(512*n+657) and IsPrime(4096*n+5265) and IsPrime(32768*n+42129)] [From Vincenzo Librandi, Aug 05 2010]
Sequence in context: A178997 A206237 A236153 * A258534 A258527 A254919
Adjacent sequences: A023348 A023349 A023350 * A023352 A023353 A023354
David W. Wilson