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A043419
Numbers whose base-7 representation contains exactly three 6's.
0
342, 685, 1028, 1371, 1714, 2057, 2106, 2155, 2204, 2253, 2302, 2351, 2358, 2365, 2372, 2379, 2386, 2393, 2394, 2395, 2396, 2397, 2398, 2399, 2743, 3086, 3429, 3772, 4115, 4458, 4507, 4556, 4605, 4654, 4703, 4752, 4759
OFFSET
1,1
MATHEMATICA
Select[Range[5000], DigitCount[#, 7, 6]==3&] (* Harvey P. Dale, Nov 24 2011 *)
CROSSREFS
Cf. A007093.
Sequence in context: A137201 A121205 A038852 * A252243 A252236 A158595
KEYWORD
nonn,base
STATUS
approved