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 A045064 Numbers whose base-4 representation contains no 0's and exactly three 3's. 2
 63, 127, 191, 223, 239, 247, 251, 253, 254, 383, 447, 479, 495, 503, 507, 509, 510, 639, 703, 735, 751, 759, 763, 765, 766, 863, 879, 887, 891, 893, 894, 927, 943, 951, 955, 957, 958, 983, 987, 989, 990, 999, 1003, 1005, 1006, 1013 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..2500 MATHEMATICA Select[Range[7000], DigitCount[#, 4, 0] == 0 && DigitCount[#, 4, 3] == 3 &] (* Vincenzo Librandi, Sep 21 2016 *) CROSSREFS Different from A031468. Cf. A007090. Sequence in context: A080947 A023720 A031468 * A043450 A031491 A044250 Adjacent sequences: A045061 A045062 A045063 * A045065 A045066 A045067 KEYWORD nonn,base AUTHOR Clark Kimberling STATUS approved

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Last modified May 26 18:19 EDT 2024. Contains 372840 sequences. (Running on oeis4.)