OFFSET

1,1

LINKS

Eric Weisstein's World of Mathematics, Egyptian Fraction

EXAMPLE

a(1) = 6 because 2 = prime(1) and 1/2 + 1/6 = 2/3, whose numerator is 2.

MATHEMATICA

len=100; a=Table[0, {len}]; done=False; s={0}; n=0; While[ !done, n++; s=Join[s, s+1/n]; ns=Numerator[s]; done=True; Do[If[a[[i]]==0, p=Prime[i]; If[Count[ns, p]>0, a[[i]]=n, done=False]], {i, len}]]; a

CROSSREFS

KEYWORD

nonn

AUTHOR

T. D. Noe, Mar 29 2004

STATUS

approved