A044920 - OEIS

%I #11 Apr 21 2021 04:25:09

%S 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,17,18,19,21,24,25,27,28,29,30,33,

%T 34,35,36,38,39,42,44,45,46,49,50,51,52,54,55,56,57,59,63,65,66,67,68,

%U 70,71,72,73,75,76,77,78,80,85,90,95,97,98

%N Numbers whose base-4 run lengths form a palindrome.

%Y Cf. A007090.

%K nonn,base

%O 1,2

%A _Clark Kimberling_