A043494 Numbers having two 1's in base 10.

11, 101, 110, 112, 113, 114, 115, 116, 117, 118, 119, 121, 131, 141, 151, 161, 171, 181, 191, 211, 311, 411, 511, 611, 711, 811, 911, 1001, 1010, 1012, 1013, 1014, 1015, 1016, 1017, 1018, 1019, 1021, 1031, 1041, 1051, 1061, 1071

Offset: 1

Author

Clark Kimberling

Keywords

• nonn
• base

Links

• Daniel Starodubtsev, Table of n, a(n) for n = 1..10000

Crossrefs

Subsequence of A011531.

Programs

Mathematica

Select[Range[1100],DigitCount[#,10,1]==2&] (* Harvey P. Dale, Nov 30 2013 *)