OFFSET
1,3
COMMENTS
a(n)=1 for n = 2^k. Do all odd integers appear in the sequence?
Note some linear patterns in the graph.
Note that A001147(m) modulo m is 0 for odd m's, hence we here consider only even m's.
LINKS
Zak Seidov, Table of n, a(n) for n = 1..1000
FORMULA
a(n)=A001147(2n) modulo 2n, n=1,2,...
MATHEMATICA
Table[Mod[(4n-1)!!, 2n], {n, 70}] (* Harvey P. Dale, Mar 29 2022 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Aug 11 2012
STATUS
approved