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A045132 Numbers whose base-4 representation contains exactly four 1's and three 3's. 0
5503, 5599, 5623, 5629, 5983, 6007, 6013, 6103, 6109, 6133, 7519, 7543, 7549, 7639, 7645, 7669, 8023, 8029, 8053, 8149, 13663, 13687, 13693, 13783, 13789, 13813, 14167, 14173, 14197, 14293, 15703, 15709, 15733, 15829 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
Select[Range[16000], DigitCount[#, 4, 1]==4&&DigitCount[#, 4, 3]==3&] (* Harvey P. Dale, May 25 2013 *)
CROSSREFS
Cf. A007090.
Sequence in context: A252312 A247924 A031617 * A096702 A252621 A234561
KEYWORD
nonn,base
AUTHOR
STATUS
approved

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Last modified April 22 01:34 EDT 2024. Contains 371887 sequences. (Running on oeis4.)