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A043496
Numbers having four 1's in base 10.
2
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
1,1
LINKS
MATHEMATICA
Select[Range[1111, 14000], DigitCount[#, 10, 1]==4&] (* Harvey P. Dale, Dec 25 2023 *)
CROSSREFS
Subsequence of A011531.
Sequence in context: A074843 A175464 A326110 * A038446 A115781 A115802
KEYWORD
nonn,base
STATUS
approved