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A111255 Primes in A111254. 1
11, 17, 29, 41, 67, 73, 89, 97, 107, 127, 151, 157, 181, 191, 271, 307, 337, 347, 389, 409, 439, 461, 491, 499, 547, 701, 709, 733, 757, 769, 821, 877, 911, 929, 971, 1009, 1033, 1063, 1171, 1187, 1249, 1289, 1297, 1307, 1453, 1571, 1597, 1609, 1667, 1697 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Robert Israel, Table of n, a(n) for n = 1..10000

FORMULA

a(n) = If Prime[n+2]+Prime[n] is prime then Prime[n+2]+Prime[n]

MAPLE

P:= [seq(ithprime(i), i=1..10000)]:

select(isprime, map(`+`, P[1..-3]+P[3..-1], 1)); # Robert Israel, Jan 03 2021

MATHEMATICA

a = Flatten[Table[If[PrimeQ[Prime[n + 2] +Prime[n] + 1], Prime[n + 2] + Prime[n] + 1, {}], {n, 1, 200}]]

CROSSREFS

Cf. A111254.

Sequence in context: A162175 A178128 A330410 * A060213 A234098 A153502

Adjacent sequences:  A111252 A111253 A111254 * A111256 A111257 A111258

KEYWORD

nonn

AUTHOR

Roger L. Bagula, Nov 01 2005

EXTENSIONS

Offset changed by Robert Israel, Jan 03 2021

STATUS

approved

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Last modified October 25 20:21 EDT 2021. Contains 348256 sequences. (Running on oeis4.)