OFFSET
1,2
COMMENTS
Oscillating sequence
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
EXAMPLE
a(3)=prime(7)!/prime(5)!/60=355687428096000/39916800/60=148512
MATHEMATICA
#[[2]]/(60*#[[1]])&/@Partition[Prime[Range[1, 31, 2]]!, 2, 1] (* Harvey P. Dale, Mar 05 2017 *)
PROG
(PARI) a(n)=prime(2*n+1)!/prime(2*n-1)!/60
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Graziano Aglietti (mg5055(AT)mclink.it), Aug 23 2010
STATUS
approved