OFFSET
1,1
LINKS
Jean-François Alcover, Table of n, a(n) for n = 1..999
FORMULA
a(n) = A086909(n)/2.
MATHEMATICA
Cases[Import["https://oeis.org/A086909/b086909.txt", "Table"], {_, _}][[All, 2]]/2 (* Jean-François Alcover, Mar 07 2020 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Lekraj Beedassy, Nov 04 2003
EXTENSIONS
Extended by Ray Chandler, Jul 03 2004
STATUS
approved