A044231 Numbers n such that string 5,4 occurs in the base 8 representation of n but not of n-1.

44, 108, 172, 236, 300, 352, 364, 428, 492, 556, 620, 684, 748, 812, 864, 876, 940, 1004, 1068, 1132, 1196, 1260, 1324, 1376, 1388, 1452, 1516, 1580, 1644, 1708, 1772, 1836, 1888, 1900, 1964, 2028, 2092, 2156, 2220, 2284, 2348

Offset

1,1

Links

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

Mathematica

Select[Range[2400], MemberQ[Partition[IntegerDigits[#, 8], 2, 1], {5, 4}] && !MemberQ[Partition[IntegerDigits[#-1, 8], 2, 1], {5, 4}]&] (* Harvey P. Dale, Jan 15 2012 *)

Crossrefs

Sequence in context: A332590 A187933 A118483 * A044612 A258555 A258548

Adjacent sequences: A044228 A044229 A044230 * A044232 A044233 A044234

Keyword

nonn,base

Author

Clark Kimberling

Status

approved