OFFSET
0,2
COMMENTS
From Robert Israel, Sep 09 2016: (Start)
Square of denominator of pochhammer(3/4,n)/pochhammer(5/4,n) = Product_{odd k <= 4n+1} k^(k mod 4 - 2).
All terms are odd squares. (End)
LINKS
Robert Israel, Table of n, a(n) for n = 0..734
MAPLE
q:= 1: A[0]:= 1:
for i from 1 to 50 do
p:= A[i-1]*(4*i+1);
q:= q*(4*i-1);
g:= igcd(p, q);
A[i]:= p/g;
q:= q/g;
od:
seq(A[i]^2, i=0..50); # Robert Israel, Sep 09 2016
MATHEMATICA
Table[Denominator[Pochhammer[3/4, n]^2/Pochhammer[5/4, n]^2], {n, 0, 20}] (* Vaclav Kotesovec, Apr 06 2018 *)
CROSSREFS
KEYWORD
nonn,frac
AUTHOR
Artur Jasinski, Aug 25 2016
STATUS
approved