A043634 - OEIS

%I #9 Apr 25 2021 12:10:02

%S 6643,6644,6645,6646,6647,6648,6649,6650,6660,6661,6663,6664,6665,

%T 6666,6667,6668,6669,6670,6671,6673,6674,6675,6676,6677,6678,6679,

%U 6680,6681,6683,6684,6685,6686,6687,6688,6689,6690

%N Numbers whose base-9 representation has exactly 5 runs.

%Y Cf. A007095.

%K nonn,base

%O 1,1

%A _Clark Kimberling_