A043496 Numbers having four 1's in base 10.

1111, 10111, 11011, 11101, 11110, 11112, 11113, 11114, 11115, 11116, 11117, 11118, 11119, 11121, 11131, 11141, 11151, 11161, 11171, 11181, 11191, 11211, 11311, 11411, 11511, 11611, 11711, 11811, 11911, 12111, 13111

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[1111,14000],DigitCount[#,10,1]==4&] (* Harvey P. Dale, Dec 25 2023 *)