OFFSET
1,1
COMMENTS
Differs from A061478 at the 59th term.
MATHEMATICA
Do[ a = IntegerDigits[ n ]; l = Length[ a ]; e = o = {}; Do[ o = Append[ o, a[ [ 2k - 1 ] ]], {k, 1, l/2 + .5} ]; Do[ e = Append[ e, a[ [ 2k ] ] ], {k, 1, l/2} ]; If[ Abs[ Apply[ Plus, o ] - Apply[ Plus, e ] ] == 9, Print[ n ] ], {n, 1, 1500} ]
ds9Q[n_]:=Module[{idn=IntegerDigits[n], ker}, ker=Table[(-1)^i, {i, 2, Length[idn]+1}]; First[ListCorrelate[ker, idn]]==9]; Select[Range[1000], ds9Q] (* Harvey P. Dale, Feb 14 2011 *)
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
Robert G. Wilson v, May 10 2001
EXTENSIONS
More terms from Larry Reeves (larryr(AT)acm.org), May 15 2001
STATUS
approved