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A154371
Duplicate of A119613.
0
10, 14, 15, 20, 26, 28, 30, 35, 38, 40, 42, 45, 50, 52, 56, 60, 62, 70, 75, 76, 78, 80, 84, 86, 90, 98, 100, 104, 112, 114, 120, 122, 124, 126, 130, 135, 140, 143, 146, 150, 152, 156, 160, 168, 172, 175, 180, 182, 186, 190, 196, 200, 206, 208, 210, 218, 224, 225
OFFSET
1,1
COMMENTS
Duplicate of A119613 - Georg Fischer, Oct 01 2018
FORMULA
a(n) = A002808(A154370(n)). [From R. J. Mathar, May 05 2010]
EXAMPLE
If 10(composite)=5*2 and 5-2=3(prime), then 10=a(1). If 14(composite)=7*2 and 7-2=5(prime), then 14=a(2). If 15(composite)=5*3 and 5-3=2(prime), then 15=a(3). If 20(composite)=5*2*2 and 5-2=3(prime), 20=a(4), etc.
CROSSREFS
Sequence in context: A307589 A209800 A119613 * A172509 A036338 A108793
KEYWORD
dead
AUTHOR
EXTENSIONS
Corrected (62 inserted, 133 removed....) by R. J. Mathar, May 05 2010
STATUS
approved