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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
OFFSET
1,2
COMMENTS
Least k such that A190423(n)+k and A190423(n)+2k are both prime.
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
Sequence in context: A319205 A110728 A359450 * A377711 A322484 A377710
KEYWORD
nonn
AUTHOR
STATUS
approved