OFFSET
1,4
COMMENTS
a(n) > 0 for n >= 10.
The old entry with this sequence number was a duplicate of A052509.
LINKS
David Applegate and N. J. A. Sloane, Table of n, a(n) for n = 1..1000
CROSSREFS
KEYWORD
sign
AUTHOR
David Applegate and N. J. A. Sloane, Oct 14 2008
STATUS
approved