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A088071
Number sandwiched between two numbers having only one prime divisor.
3
3, 4, 6, 8, 10, 12, 18, 24, 26, 28, 30, 42, 48, 60, 72, 80, 82, 102, 108, 126, 138, 150, 168, 180, 192, 198, 228, 240, 242, 270, 282, 312, 348, 360, 420, 432, 462, 522, 570, 600, 618, 642, 660, 728, 810, 822, 828, 840, 858, 882, 1020, 1032, 1050, 1062, 1092, 1152
OFFSET
1,1
COMMENTS
A014574 (average of twin prime pairs) is a subsequence.
PROG
(PARI) for(n=2, 1200, if(matsize(factor(n-1))[1]*matsize(factor(n+1))[1]==1, print1(n, ", ")))
CROSSREFS
Sequence in context: A206580 A291899 A059608 * A247422 A256698 A024182
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Sep 22 2003
EXTENSIONS
Edited and extended by Klaus Brockhaus, Sep 25 2003
STATUS
approved