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A095378 Integers k for which 1 + A094125(k) = 1 + 3*2^k + 2*3^k is prime. 1
1, 2, 3, 4, 7, 9, 10, 11, 12, 19, 22, 24, 47, 69, 110, 131, 514, 566, 644, 1340, 1761, 3129 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..22.

EXAMPLE

4 is a term because 1 + 3*2^4 + 2*3^4 = 1 + 162 + 48 = 211 is prime.

CROSSREFS

Cf. A094125, A095379 (associated primes).

Sequence in context: A086391 A120127 A047548 * A141489 A060253 A066276

Adjacent sequences:  A095375 A095376 A095377 * A095379 A095380 A095381

KEYWORD

nonn,more

AUTHOR

Labos Elemer, Jun 07 2004

STATUS

approved

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Last modified August 9 02:14 EDT 2020. Contains 336310 sequences. (Running on oeis4.)