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A045144
Numbers whose base-4 representation contains exactly two 2's and one 3.
0
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
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
KEYWORD
nonn,base
STATUS
approved