A044632 Numbers n such that string 0,0 occurs in the base 9 representation of n but not of n+1.

81, 162, 243, 324, 405, 486, 567, 648, 737, 810, 891, 972, 1053, 1134, 1215, 1296, 1377, 1466, 1539, 1620, 1701, 1782, 1863, 1944, 2025, 2106, 2195, 2268, 2349, 2430, 2511, 2592, 2673, 2754, 2835, 2924, 2997, 3078, 3159

Offset

1,1

Links

Table of n, a(n) for n=1..39.

Mathematica

Select[Range[3200], MemberQ[Partition[IntegerDigits[#, 9], 2, 1], {0, 0}] && !MemberQ[Partition[IntegerDigits[#+1, 9], 2, 1], {0, 0}]&] (* Harvey P. Dale, Jun 20 2011 *)

Crossrefs

Sequence in context: A353456 A044251 A043454 * A031494 A043324 A267696

Adjacent sequences: A044629 A044630 A044631 * A044633 A044634 A044635

Keyword

nonn,base

Author

Clark Kimberling

Status

approved