A162988 n appears A008578(n) times.

1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10

Offset

1,2

Links

Table of n, a(n) for n=1..96.

Formula

a(n) ~ 2 sqrt(n / log n)

Crossrefs

Sequence in context: A095791 A238965 A036042 * A143824 A182009 A034463

Adjacent sequences: A162985 A162986 A162987 * A162989 A162990 A162991

Keyword

nonn

Author

Jaroslav Krizek, Jul 19 2009

Extensions

Formula and more terms from Charles R Greathouse IV, Nov 02 2009

Correction for change of offset in A158611 and A008578 in Aug 2009 Jaroslav Krizek, Jan 27 2010

Status

approved