OFFSET
0,3
COMMENTS
For positive real r the ratio of factorials floor((30*r*n))! * (floor(r*n))!/((floor(15*r*n))!*(floor(10*r*n))!*(floor(6*r*n))!) is an integer. The present sequence is the case r = 1/30. The case r = 1 is A211417.
LINKS
Carauleanu Marc, Table of n, a(n) for n = 0..424
PROG
(PARI) a(n) = n!*(floor(n/30))!/((floor(n/2))!*(floor(n/3))!*(floor(n/5))!);
vector(50, n, a(n-1)) \\ Altug Alkan, Oct 02 2015
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Peter Bala, Apr 11 2012
STATUS
approved