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A091179 A088878 indexed by A000040. 4
2, 3, 4, 5, 6, 9, 12, 14, 15, 16, 18, 19, 20, 27, 30, 31, 33, 38, 39, 42, 43, 44, 47, 54, 55, 56, 58, 59, 62, 63, 65, 67, 68, 69, 74, 79, 83, 84, 86, 89, 91, 93, 94, 99, 100, 102, 107, 108, 110, 122, 123, 129, 133, 134, 135, 139, 143, 147, 153, 154, 155, 156, 162, 167 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Michael De Vlieger, Table of n, a(n) for n = 1..10000

FORMULA

a(n)=k such that A000040(k) = A088878(n).

MAPLE

select(n -> isprime(3*ithprime(n)-2), [$1..1000]); # Robert Israel, Mar 04 2016

MATHEMATICA

PrimePi@ Select[Prime@ Range@ 167, PrimeQ[3 # - 2] &] (* Michael De Vlieger, Mar 04 2016 *)

CROSSREFS

Cf. A088878, A091180, A091181.

Sequence in context: A325323 A331016 A125155 * A036027 A036032 A008813

Adjacent sequences:  A091176 A091177 A091178 * A091180 A091181 A091182

KEYWORD

easy,nonn

AUTHOR

Ray Chandler, Dec 27 2003

EXTENSIONS

Offset corrected by Michael De Vlieger, Mar 04 2016

STATUS

approved

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Last modified January 18 19:40 EST 2020. Contains 331029 sequences. (Running on oeis4.)