OFFSET
0,5
COMMENTS
LINKS
M. F. Hasler, Table of n, a(n) for n = 0..3000.
Douglas M. Campbell, The Computation of Catalan Numbers, Mathematics Magazine, Vol. 57, No. 4. (Sep., 1984), pp. 195-208.
MAPLE
with(numtheory):a:=proc(n) if n=0 then 0 else bigomega(binomial(2*n, n)/(1+n)) fi end: seq(a(n), n=0..75); # Zerinvary Lajos, Apr 11 2008
MATHEMATICA
a[n_] := PrimeOmega[ CatalanNumber[n]]; Table[a[n], {n, 0, 75}] (* Jean-François Alcover, Jul 02 2013 *)
PROG
(PARI) A081399(n)=bigomega(prod(i=2, n, (n+i)/i)) \\ M. F. Hasler, Feb 06 2008
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Labos Elemer, Mar 28 2003
EXTENSIONS
Edited and extended by M. F. Hasler, Feb 06 2008
STATUS
approved