A044179 Numbers n such that string 5,6 occurs in the base 7 representation of n but not of n-1.

41, 90, 139, 188, 237, 286, 335, 384, 433, 482, 531, 580, 629, 678, 727, 776, 825, 874, 923, 972, 1021, 1070, 1119, 1168, 1217, 1266, 1315, 1364, 1413, 1462, 1511, 1560, 1609, 1658, 1707, 1756, 1805, 1854, 1903, 1952, 2001

Offset

1,1

Links

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

Tanya Khovanova, Non Recursions

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 7], {5, 6}] >0, 1, 0], {n, 2500}], {0, 1}][[All, 2]] (* Harvey P. Dale, Mar 21 2019 *)

Crossrefs

Sequence in context: A107145 A087857 A139995 * A044560 A039469 A124247

Adjacent sequences: A044176 A044177 A044178 * A044180 A044181 A044182

Keyword

nonn,base

Author

Clark Kimberling

Status

approved