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A167516
Index of A141468(n) in the isolated nonprimes A014574 or the non-isolated nonprimes A164276.
0
1, 2, 1, 2, 3, 4, 5, 3, 6, 7, 8, 4, 9, 10, 11, 12, 13, 14, 15, 16, 5, 17, 18, 19, 20, 21, 22, 23, 24, 6, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 7, 38, 39, 40, 41, 42, 43, 44, 45, 8, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68
OFFSET
1,2
COMMENTS
FORMULA
A014574(a(n)-1)=n or A164276(a(n))=n.
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
Corrected definition and formula index - R. J. Mathar, May 30 2010
STATUS
approved