A044101 - OEIS

%I #5 Mar 30 2012 18:56:42

%S 24,49,74,99,120,149,174,199,224,245,274,299,324,349,370,399,424,449,

%T 474,495,524,549,574,599,649,674,699,724,745,774,799,824,849,870,899,

%U 924,949,974,995,1024,1049,1074,1099,1120,1149

%N Numbers n such that string 4,4 occurs in the base 5 representation of n but not of n-1.

%K nonn,base

%O 1,1

%A _Clark Kimberling_