A044208 Numbers n such that string 2,5 occurs in the base 8 representation of n but not of n-1.

21, 85, 149, 168, 213, 277, 341, 405, 469, 533, 597, 661, 680, 725, 789, 853, 917, 981, 1045, 1109, 1173, 1192, 1237, 1301, 1344, 1429, 1493, 1557, 1621, 1685, 1704, 1749, 1813, 1877, 1941, 2005, 2069, 2133, 2197, 2216, 2261

Offset

1,1

Links

Table of n, a(n) for n=1..41.

Mathematica

Flatten[Position[Partition[Table[If[MemberQ[Partition[IntegerDigits[n, 8], 2, 1], {2, 5}], 1, 0], {n, 2300}], 2, 1], {0, 1}]]+1 (* Harvey P. Dale, Mar 29 2015 *)

Crossrefs

Sequence in context: A104676 A143244 A041856 * A044589 A374527 A116972

Adjacent sequences: A044205 A044206 A044207 * A044209 A044210 A044211

Keyword

nonn,base

Author

Clark Kimberling

Status

approved