OFFSET
1,2
COMMENTS
The value of the empty product at n=1 is 1.
Partial products of the sequence of fractions 3, 3, 2, 3, 5/3, 3, 5/3, 2, 5/3, 3, 7/5, ...
The sequence is declared "fini" because the products are no longer integers at n >= 72.
LINKS
Nathaniel Johnston, Table of n, a(n) for n = 1..71 (full sequence)
MAPLE
A181574 := proc(n) mul( (numtheory[tau](i)+1)/(numtheory[tau](i)-1) , i=2..n) ; end proc; # R. J. Mathar, Feb 01 2011
MATHEMATICA
FoldList[Times, 1, (# + 1)/(# - 1) & /@ Array[DivisorSigma[0, #] &, 70, 2]] (* Amiram Eldar, Apr 17 2024 *)
CROSSREFS
KEYWORD
nonn,easy,fini,full
AUTHOR
Ctibor O. Zizka, Jan 30 2011
STATUS
approved