A025673 - OEIS

%I #7 Nov 10 2024 19:11:03

%S 0,0,1,0,1,2,0,1,2,3,0,1,2,3,0,4,1,2,3,0,4,1,5,2,3,0,4,1,5,2,6,3,0,4,

%T 1,5,2,6,3,0,7,4,1,5,2,6,3,0,7,4,1,8,5,2,6,3,0,7,4,1,8,5,2,9,6,3,0,7,

%U 4,1,8,5,2,9,6,3,10,0,7,4,1,8,5,2,9,6,3,10,0,7,4,11,1,8,5,2,9,6,3,10,0,7,4,11,1

%N Exponent of 8 (value of j) in n-th number of form 5^i*8^j.

%t Take[Sort[Flatten[Table[{5^i 8^j,j},{i,0,20},{j,0,20}],1]][[;;,2]],120] (* _Harvey P. Dale_, Nov 10 2024 *)

%Y Differs from A025658 at a(2805).

%K nonn

%O 1,6

%A _David W. Wilson_