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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