A043589 - OEIS

%I #9 Apr 25 2021 01:26:01

%S 7381,7382,7386,7387,7390,7391,7392,7394,7428,7430,7431,7432,7435,

%T 7436,7440,7441,7462,7463,7467,7468,7471,7472,7473,7475,7482,7484,

%U 7485,7486,7498,7499,7500,7502,7806,7808,7809,7810

%N Numbers whose base-3 representation has exactly 9 runs.

%Y Cf. A007089.

%K nonn,base

%O 1,1

%A _Clark Kimberling_