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A071890 A071888(n)-n. 4
1, 4, 3, 2, 5, 4, 7, 2, 6, 4, 11, 2, 13, 7, 6, 6, 17, 3, 19, 2, 9, 4, 23, 2, 5, 4, 3, 2, 29, 3, 31, 2, 6, 4, 7, 2, 37, 4, 3, 2, 41, 4, 43, 2, 6, 12, 47, 3, 21, 5, 6, 6, 53, 3, 10, 2, 9, 4, 59, 2, 61, 4, 3, 2, 5, 3, 67, 2, 9, 4, 71, 2, 73, 4, 3, 2, 14, 4, 79, 2, 6, 4, 83, 2, 10 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

EXAMPLE

All numbers between n=46 and 58=n+12 are not squarefree or relatively prime to 46, therefore a(46)=12.

PROG

(Haskell)

a071890 n = a071888 n - n  -- Reinhard Zumkeller, Jun 10 2012

CROSSREFS

Cf. A071889, A071891.

Sequence in context: A110631 A333669 A159846 * A167837 A222228 A263449

Adjacent sequences:  A071887 A071888 A071889 * A071891 A071892 A071893

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Jun 10 2002

STATUS

approved

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Last modified April 11 12:00 EDT 2021. Contains 342886 sequences. (Running on oeis4.)