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A190424 RECORDS transform of A120627. 1
0, 2, 6, 24, 30, 54, 84, 90, 120, 138, 150, 156, 204, 276, 306, 324, 360, 462, 486, 558, 612, 642, 702, 840, 990, 1014, 1584, 1704, 1722, 1770, 1848, 1932, 2010, 2034, 2208, 2310, 2406, 2772, 2814, 3204, 3312, 3450, 3594, 3870, 4080, 4530 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Least k such that A190423(n)+k and A190423(n)+2k are both prime.

LINKS

Table of n, a(n) for n=1..46.

PROG

(PARI) print1("0, 2"); r=2; forprime(p=5, 4e9, forstep(k=6, 9e9, 6, if(isprime(p+k)&isprime(p+2*k), if(k>r, r=k; print1(", "k)); break)))

CROSSREFS

Cf. A120627, A190423.

Sequence in context: A079433 A319205 A110728 * A322484 A066332 A069141

Adjacent sequences:  A190421 A190422 A190423 * A190425 A190426 A190427

KEYWORD

nonn

AUTHOR

Charles R Greathouse IV, May 10 2011

STATUS

approved

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Last modified July 24 06:56 EDT 2021. Contains 346273 sequences. (Running on oeis4.)