OFFSET
1,2
EXAMPLE
64 qualifies because 320 - 256 = 64 and 320 is the term after 256 in A020697.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
J. Lowell, Aug 05 2008
EXTENSIONS
a(9)-a(19) from R. J. Mathar, Jan 23 2009
STATUS
approved