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1,1

Apparently a(n) = A025584(n) for all n>2. Verified for indices n<=100000. [From R. J. Mathar, Mar 01 2010]

Table of n, a(n) for n=1..56.

p := 2: for n from 1 to 100 do printf("%d, ", p) ; p := nextprime(p+3) ; od: [From R. J. Mathar, Feb 21 2009]

A156829

Sequence in context: A038942 A175283 A124136 * A019385 A075552 A274504

Adjacent sequences: A156825 A156826 A156827 * A156829 A156830 A156831

nonn

Leroy Quet, Feb 16 2009

More terms from R. J. Mathar, Feb 21 2009

approved