A043182 Numbers k such that 0 and 3 occur juxtaposed in the base-9 representation of k but not of k-1.

27, 84, 108, 165, 189, 243, 270, 327, 351, 408, 432, 489, 513, 570, 594, 651, 675, 732, 756, 813, 837, 894, 918, 972, 999, 1056, 1080, 1137, 1161, 1218, 1242, 1299, 1323, 1380, 1404, 1461, 1485, 1542, 1566, 1623, 1647, 1701

Offset

1,1

Links

Table of n, a(n) for n=1..42.

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 9], {0, 3}]>0||SequenceCount[IntegerDigits[n, 9], {3, 0}]>0, 1, 0], {n, 2000}], {0, 1}][[;; , 2]] (* Harvey P. Dale, Dec 29 2024 *)

Crossrefs

Cf. A007095.

Sequence in context: A044981 A251081 A161340 * A039359 A043962 A035074

Adjacent sequences: A043179 A043180 A043181 * A043183 A043184 A043185

Keyword

nonn,base

Author

Clark Kimberling

Status

approved