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A044131 Numbers n such that string 4,5 occurs in the base 6 representation of n but not of n-1. 1
29, 65, 101, 137, 173, 209, 245, 281, 317, 353, 389, 425, 461, 497, 533, 569, 605, 641, 677, 713, 749, 785, 821, 857, 893, 929, 965, 1001, 1037, 1109, 1145, 1181, 1217, 1253, 1289, 1325, 1361, 1397, 1433, 1469, 1505, 1541, 1577, 1613, 1649, 1685, 1721, 1757 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
f[n_] := Length[StringPosition[ToString[FromDigits[IntegerDigits[n, 6]]], "45", 1]]; Select[Table[n, {n, 10000}], f[#] > 0 && f[# - 1] == 0 &] (* Vladimir Joseph Stephan Orlovsky, Jul 20 2011 *)
CROSSREFS
Cf. A044512.
Sequence in context: A134547 A259636 A240169 * A044512 A211492 A165238
KEYWORD
nonn,base
AUTHOR
STATUS
approved

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Last modified June 18 18:01 EDT 2024. Contains 373486 sequences. (Running on oeis4.)