OFFSET
0,2
COMMENTS
LINKS
Michael De Vlieger, Table of n, a(n) for n = 0..10000
FORMULA
a(n) = Sum_{i=0..n} 1 + floor(log(5^i)/log(2)). - Michel Marcus, Oct 02 2013
MATHEMATICA
Table[1 + Sum[Ceiling[j*Log[2, 5]], {j, i}], {i, 0, 50}] (* Michael De Vlieger, Feb 08 2023 *)
PROG
(PARI) a(n) = sum(i=0, n, 1 + floor(log(5^i)/log(2))); \\ Michel Marcus, Oct 02 2013
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved