OFFSET
1,3
COMMENTS
n divides a(n) and a(n+2) for odd n. 2 divides a(n) for even n. - Alexander Adamchuk, Jan 11 2008
LINKS
Alexander Adamchuk, Jan 11 2008, Table of n, a(n) for n = 1..51
E. W. Weisstein's World of Mathematics, Mousetrap.
MATHEMATICA
Denominator[k=1; NestList[1+1/(k++ #1)&, 1, 50]] - 1 (* Alexander Adamchuk, Jan 11 2008 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Jan 07 2008
STATUS
approved