login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A043636
Numbers whose base-9 representation has exactly 7 runs.
2
538084, 538085, 538086, 538087, 538088, 538089, 538090, 538091, 538101, 538102, 538104, 538105, 538106, 538107, 538108, 538109, 538110, 538111, 538112, 538114, 538115, 538116, 538117, 538118, 538119, 538120, 538121
OFFSET
1,1
MATHEMATICA
Select[Range[550000], Length[Split[IntegerDigits[#, 9]]]==7&] (* Harvey P. Dale, Mar 11 2015 *)
CROSSREFS
Cf. A007095.
Sequence in context: A210124 A237323 A251355 * A082813 A204345 A269323
KEYWORD
nonn,base
STATUS
approved