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A330278 Primes starting 12-tuples of consecutive primes that have symmetrical gaps about their mean and form 6 pairs of twin primes. 1
17479880417, 158074620437, 1071796554401, 1087779101699, 1153782400787, 1628444511389, 2066102452949, 2083857437327, 2561560206377, 3731086236287, 3751571181929, 4158362831639, 4878193583477, 5008751356547, 5378606656847, 5531533689527, 7020090738707, 7036216236989 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Franz-Xaver Harvanek, Table of n, a(n) for n = 1..228 (terms a(7)-a(132) from Giovanni Resta).

EXAMPLE

a(1) = A274792(6) = 17479880417 starts a 12-tuple of consecutive primes: 17479880417+s for s in {0, 2, 24, 26, 30, 32, 54, 56, 60, 62, 84, 86} that are symmetric about 17479880417+43 and form 6 pairs of twin primes.

CROSSREFS

Cf. A055380, A055381, A055382, A081235, A266511, A266512.

Sequence in context: A101815 A113643 A233799 * A202724 A115537 A233486

Adjacent sequences:  A330275 A330276 A330277 * A330279 A330280 A330281

KEYWORD

nonn

AUTHOR

Max Alekseyev, Dec 08 2019

EXTENSIONS

a(2)-a(6) from Franz-Xaver Harvanek

Terms a(7) and beyond from Giovanni Resta, Dec 10 2019

STATUS

approved

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Last modified April 9 14:04 EDT 2020. Contains 333353 sequences. (Running on oeis4.)