A045026 Numbers whose base-4 representation contains exactly two 0's and three 1's.

261, 273, 276, 321, 324, 336, 1046, 1047, 1049, 1053, 1061, 1077, 1094, 1095, 1097, 1101, 1106, 1107, 1112, 1116, 1121, 1124, 1137, 1140, 1157, 1169, 1172, 1221, 1233, 1236, 1286, 1287, 1289, 1293, 1298, 1299, 1304, 1308

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Mathematica

Select[Range[2000], DigitCount[#, 4, 0] == 2 && DigitCount[#, 4, 1] == 3 &] (* Vincenzo Librandi, Sep 22 2016 *)

Crossrefs

Cf. A007090.

Sequence in context: A200808 A350084 A280325 * A319727 A131071 A345559

Adjacent sequences: A045023 A045024 A045025 * A045027 A045028 A045029

Keyword

nonn,base

Author

Clark Kimberling

Status

approved