OFFSET
1,2
COMMENTS
a(n) is divisible by A049606(n). - Robert Israel, Jan 28 2019
LINKS
Robert Israel, Table of n, a(n) for n = 1..403
MAPLE
f:= n -> doublefactorial(2*n+1) mod doublefactorial(2*n):
map(f, [$1..40]); # Robert Israel, Jan 28 2019
PROG
(Python)
o=e=1
for n in range(2, 99, 2):
o*=n+1
e*=n
print str(o%e)+', ',
CROSSREFS
KEYWORD
nonn
AUTHOR
Alex Ratushnyak, Jan 27 2019
STATUS
approved