OFFSET
0,1
LINKS
Eric Weisstein's World of Mathematics, Pierce Expansion
Wikipedia, Engel Expansion
EXAMPLE
e = Pi/2 + Pi^2/(2*5) + Pi^3/(2*5*20) + Pi^4/(2*5*20*89) + Pi^5/(2*5*20*89*809) + ...
CROSSREFS
KEYWORD
nonn,more
AUTHOR
G. C. Greubel, Dec 25 2016
STATUS
approved