A044722 Numbers n such that string 0,9 occurs in the base 10 representation of n but not of n+1.

109, 209, 309, 409, 509, 609, 709, 809, 909, 1009, 1099, 1109, 1209, 1309, 1409, 1509, 1609, 1709, 1809, 1909, 2009, 2099, 2109, 2209, 2309, 2409, 2509, 2609, 2709, 2809, 2909, 3009, 3099, 3109, 3209, 3309, 3409, 3509

Offset

1,1

Links

Table of n, a(n) for n=1..38.

Mathematica

Select[Range[3600], MemberQ[Partition[IntegerDigits[#], 2, 1], {0, 9}] && !MemberQ[Partition[IntegerDigits[#+1], 2, 1], {0, 9}]&] (* Harvey P. Dale, Feb 22 2012 *)

Crossrefs

Sequence in context: A061879 A171121 A044341 * A142697 A142777 A142797

Adjacent sequences: A044719 A044720 A044721 * A044723 A044724 A044725

Keyword

nonn,base

Author

Clark Kimberling

Status

approved