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A043105 Numbers n such that 2 and 3 occur juxtaposed in the base 4 representation of n but not of n-1. 0
11, 14, 27, 30, 43, 56, 62, 75, 78, 91, 94, 107, 120, 126, 139, 142, 155, 158, 171, 203, 206, 219, 222, 224, 248, 254, 267, 270, 283, 286, 299, 312, 318, 331, 334, 347, 350, 363, 376, 382, 395, 398, 411, 414, 427, 459, 462, 475 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..48.

MATHEMATICA

Select[Range[500], MemberQ[Sort/@Partition[IntegerDigits[#, 4], 2, 1], {2, 3}]&&!MemberQ[Sort/@Partition[IntegerDigits[#-1, 4], 2, 1], {2, 3}]&]  (* Harvey P. Dale, Apr 21 2011 *)

CROSSREFS

Sequence in context: A030726 A039282 A045139 * A043885 A326916 A305010

Adjacent sequences:  A043102 A043103 A043104 * A043106 A043107 A043108

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified May 14 09:58 EDT 2021. Contains 343879 sequences. (Running on oeis4.)