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A162819
Positive numbers n such that 48*n/(48+n) are integers.
9
16, 24, 48, 80, 96, 144, 208, 240, 336, 528, 720, 1104, 2256
OFFSET
1,1
MATHEMATICA
f[a_, b_]:=(a*b)/(a+b); a=48; lst={}; Do[If[f[a, n]==IntegerPart[f[a, n]], AppendTo[lst, n]], {n, 9!}]; lst
Select[Range[2300], IntegerQ[(48#)/(48+#)]&] (* Harvey P. Dale, Dec 18 2018 *)
KEYWORD
nonn,fini,full
AUTHOR
EXTENSIONS
Keywords fini,full added by R. J. Mathar, Jul 31 2009
STATUS
approved