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A039315
Numbers whose base-7 representation has the same nonzero number of 1's and 3's.
0
10, 22, 52, 66, 70, 72, 74, 75, 76, 80, 87, 94, 108, 120, 148, 154, 156, 158, 159, 160, 162, 176, 183, 190, 206, 218, 255, 267, 304, 316, 346, 360, 364, 366, 368, 369, 370, 374, 381, 388, 416, 444, 458, 462, 464, 466, 467, 468, 472, 479, 486, 490, 492, 494
OFFSET
1,1
MATHEMATICA
Select[Range[500], DigitCount[#, 7, 1]==DigitCount[#, 7, 3]>0&] (* Harvey P. Dale, Apr 01 2023 *)
CROSSREFS
Cf. A007093.
Sequence in context: A014008 A219744 A246419 * A225708 A088871 A043138
KEYWORD
nonn,base,easy
STATUS
approved