A033285 Numbers whose maximal base-10 run length is 4.

1111, 2222, 3333, 4444, 5555, 6666, 7777, 8888, 9999, 10000, 11110, 11112, 11113, 11114, 11115, 11116, 11117, 11118, 11119, 12222, 13333, 14444, 15555, 16666, 17777, 18888, 19999, 20000, 21111, 22220, 22221, 22223

Offset

1,1

Comments

There are 9 4-digit terms, 162 5-digit terms, and 2,349 6-digit terms. - Harvey P. Dale, Sep 07 2024

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Mathematica

Select[Range[1000, 99999], Max[Length/@Split[IntegerDigits[#]]]==4&] (* Harvey P. Dale, Sep 07 2024 *)

Crossrefs

Sequence in context: A218042 A176670 A072434 * A085109 A346000 A074843

Adjacent sequences: A033282 A033283 A033284 * A033286 A033287 A033288

Keyword

nonn,base,changed

Author

Clark Kimberling

Status

approved