OFFSET
1,3
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000
FORMULA
MAPLE
MATHEMATICA
s = {}; m = 12; Do[n = 5^k; While[n <= 5^m, AppendTo[s, n]; n *= 2], {k, 0, m}]; IntegerExponent[#, 2] & /@ Union[s]
PROG
(PARI) lista(nn) = {vec = vector(nn, i , i); subset = select(n->(n/(2^valuation(n, 2)*5^valuation(n, 5)) == 1), vec); for (i = 1, #subset, print1(valuation(subset[i], 2), ", "); ); } \\ Michel Marcus, Oct 01 2013
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
Corrected by David W. Wilson, Oct 15 1997
STATUS
approved