A045144 Numbers whose base-4 representation contains exactly two 2's and one 3.

43, 46, 58, 107, 110, 122, 139, 142, 155, 158, 163, 167, 172, 173, 178, 182, 184, 185, 202, 218, 226, 230, 232, 233, 299, 302, 314, 363, 366, 378, 395, 398, 411, 414, 419, 423, 428, 429, 434, 438, 440, 441, 458, 474, 482, 486

Offset

1,1

Links

Table of n, a(n) for n=1..46.

Mathematica

Select[Range[500], DigitCount[#, 4, 2]==2&&DigitCount[#, 4, 3]==1&]  (* Harvey P. Dale, Mar 24 2011 *)

Crossrefs

Cf. A007090.

Sequence in context: A085468 A113819 A190881 * A187777 A105375 A334104

Adjacent sequences: A045141 A045142 A045143 * A045145 A045146 A045147

Keyword

nonn,base

Author

Clark Kimberling

Status

approved