OFFSET
0,2
COMMENTS
LINKS
Colin Barker, Table of n, a(n) for n = 0..1000
FORMULA
EXAMPLE
a(0)=0*1, a(1)=1*6, a(2)=2*30=60,, a(3)=3*42=126.
PROG
(PARI) a(n)=n*denominator(bernfrac(2*n))
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul Curtz, Sep 05 2013
EXTENSIONS
Typo in data fixed by Colin Barker, Jul 03 2015
STATUS
approved