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URL: https://oeis.org/A039455

⇱ A039455 - OEIS

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A039455
Numbers whose base-11 representation has the same nonzero number of 1's and 9's.
0
20, 100, 130, 152, 163, 174, 185, 196, 207, 218, 220, 222, 223, 224, 225, 226, 227, 228, 230, 240, 262, 342, 383, 463, 504, 584, 625, 705, 746, 826, 867, 947, 988, 1068, 1090, 1100, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1110, 1112, 1123, 1134
OFFSET
1,1
MATHEMATICA
b11Q[n_]:=Module[{dc=DigitCount[n, 11]}, dc[[1]]==dc[[9]]>0]
Select[Range[1200], b11Q] (* Harvey P. Dale, Feb 27 2011 *)
CROSSREFS
Sequence in context: A157429 A200470 A128676 * A294112 A188050 A027986
KEYWORD
nonn,base,easy
STATUS
approved