A075527 a(n) = A008578(n+3) - A008578(n+1).

2, 3, 4, 6, 6, 6, 6, 6, 10, 8, 8, 10, 6, 6, 10, 12, 8, 8, 10, 6, 8, 10, 10, 14, 12, 6, 6, 6, 6, 18, 18, 10, 8, 12, 12, 8, 12, 10, 10, 12, 8, 12, 12, 6, 6, 14, 24, 16, 6, 6, 10, 8, 12, 16, 12, 12, 8, 8, 10, 6, 12, 24, 18, 6, 6, 18, 20, 16, 12, 6, 10, 14, 14, 12, 10, 10, 14, 12, 12, 18, 12

Offset: 0

Author

Reinhard Zumkeller, Sep 22 2002

Keywords

• nonn

Comments

For n>0: a(n) = A031131(n) and a(n) - a(n-1) = A075526(n).

Crossrefs

Cf. A000040, A076272, A076273.

Cf. A008578, A031131, A075526.

Extensions

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