A044536 - OEIS

A044536

Numbers n such that string 2,3 occurs in the base 7 representation of n but not of n+1.

17, 66, 115, 125, 164, 213, 262, 311, 360, 409, 458, 468, 507, 556, 605, 654, 703, 752, 801, 811, 881, 899, 948, 997, 1046, 1095, 1144, 1154, 1193, 1242, 1291, 1340, 1389, 1438, 1487, 1497, 1536, 1585, 1634, 1683, 1732, 1781

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OFFSET

1,1

LINKS

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

MATHEMATICA

Select[Range[2000], MemberQ[Partition[IntegerDigits[#, 7], 2, 1], {2, 3}] && !MemberQ[ Partition[IntegerDigits[#+1, 7], 2, 1], {2, 3}]&] (* Harvey P. Dale, Feb 21 2013 *)

CROSSREFS

Sequence in context: A216143 A082614 A044155 * A115295 A065011 A031432

Adjacent sequences: A044533 A044534 A044535 * A044537 A044538 A044539

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved