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A043416
Numbers whose base-7 representation contains exactly four 5's.
0
2000, 4401, 6802, 9203, 11604, 12290, 12633, 12976, 13319, 13662, 13760, 13809, 13858, 13907, 13956, 13970, 13977, 13984, 13991, 13998, 14000, 14001, 14002, 14003, 14004, 14006, 14012, 14054, 14348, 16406, 18807
OFFSET
1,1
MATHEMATICA
Select[Range[20000], DigitCount[#, 7, 5]==4&] (* Harvey P. Dale, May 16 2019 *)
CROSSREFS
Cf. A007093.
Sequence in context: A037029 A048517 A048518 * A125680 A162238 A162239
KEYWORD
nonn,base
STATUS
approved