

A073169


a(n)=A002808(n)n, difference between nth composite and n.


5



3, 4, 5, 5, 5, 6, 7, 7, 7, 8, 9, 9, 9, 10, 10, 10, 10, 10, 11, 12, 12, 12, 12, 12, 13, 13, 13, 14, 15, 15, 15, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 18, 19, 19, 19, 19, 19, 20, 20, 20, 21, 22, 22, 22, 22, 22, 23, 23, 23, 24, 24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 26, 26
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OFFSET

1,1


COMMENTS



LINKS



FORMULA



MATHEMATICA

c[n_Integer] := FixedPoint[n+PrimePi[ # ]+1&, n] Table[c[w]w, {w, 1, 128}]
With[{c=Select[Range[100], CompositeQ]}, #[[1]]#[[2]]&/@Thread[ {c, Range[ Length[ c]]}]] (* Harvey P. Dale, Feb 03 2015 *)


CROSSREFS



KEYWORD

nonn


AUTHOR



EXTENSIONS



STATUS

approved



