A190424 RECORDS transform of A120627.

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

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: A319205 A110728 A359450 * A322484 A066332 A069141

Adjacent sequences: A190421 A190422 A190423 * A190425 A190426 A190427

Keyword

nonn

Author

Charles R Greathouse IV, May 10 2011

Status

approved