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A105048
Numbers n such that prime(n+2) - ( prime(n+1)-prime(n) ) is a semiprime.
0
1, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 16, 17, 18, 19, 20, 21, 22, 23, 24, 28, 29, 31, 32, 34, 35, 37, 38, 42, 45, 47, 50, 51, 52, 53, 56, 60, 63, 65, 66, 67, 68, 70, 71, 72, 74, 76, 77, 79, 80, 83, 84, 85, 86, 87, 95, 96, 97, 99, 100, 101, 103, 105, 106, 111, 113, 114, 115
OFFSET
1,2
PROG
(PARI) isok(n) = bigomega(prime(n+2) - (prime(n+1)-prime(n))) == 2 \\ Michel Marcus, Jun 03 2013
CROSSREFS
Cf. A104243.
Sequence in context: A216442 A298296 A099474 * A026511 A321153 A304814
KEYWORD
easy,nonn
AUTHOR
Giovanni Teofilatto, Apr 04 2005
EXTENSIONS
More terms from Rick L. Shepherd, May 18 2005
STATUS
approved