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A076694 a(n) = n - sum of the distinct prime factors of n. 2
1, 0, 0, 2, 0, 1, 0, 6, 6, 3, 0, 7, 0, 5, 7, 14, 0, 13, 0, 13, 11, 9, 0, 19, 20, 11, 24, 19, 0, 20, 0, 30, 19, 15, 23, 31, 0, 17, 23, 33, 0, 30, 0, 31, 37, 21, 0, 43, 42, 43, 31, 37, 0, 49, 39, 47, 35, 27, 0, 50, 0, 29, 53, 62, 47, 50, 0, 49, 43, 56, 0, 67, 0, 35, 67, 55, 59, 60, 0, 73 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..80.

FORMULA

a(n) = n - A008472(n).

EXAMPLE

a(1) = 1 - 0 = 1; a(6) = 6 - (2 + 3) = 1.

MATHEMATICA

Join[{1}, Rest[Table[n-Total[Transpose[FactorInteger[n]][[1]]], {n, 80}]]] (* Harvey P. Dale, May 13 2012 *)

CROSSREFS

Cf. A075254, A075255, A075653.

Sequence in context: A136579 A249731 A249732 * A095403 A011328 A048277

Adjacent sequences:  A076691 A076692 A076693 * A076695 A076696 A076697

KEYWORD

easy,nonn

AUTHOR

Joseph L. Pe, Oct 25 2002

STATUS

approved

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Last modified February 25 10:54 EST 2020. Contains 332229 sequences. (Running on oeis4.)