OFFSET
1,3
LINKS
Clark Kimberling, Table of n, a(n) for n = 1..1000
FORMULA
This is the sequence d( ) in the formula for A131388.
EXAMPLE
See A131388.
MATHEMATICA
See A131388.
CROSSREFS
KEYWORD
sign
AUTHOR
Clark Kimberling, Jul 05 2007
EXTENSIONS
Definition clarified by Clark Kimberling, May 12 2015
STATUS
approved