OFFSET
1,1
MATHEMATICA
Select[Range[3000], MemberQ[Partition[IntegerDigits[#, 9], 2, 1], {0, 1}] && !MemberQ[ Partition[IntegerDigits[#+1, 9], 2, 1], {0, 1}]&] (* Harvey P. Dale, Feb 20 2013 *)
SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 9], {0, 1}]>0, 1, 0], {n, 3000}], {1, 0}] [[;; , 1]] (* Harvey P. Dale, Jan 16 2024 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
STATUS
approved