OFFSET
1,2
EXAMPLE
15/23 = 0.65217391304347826...
e^(15/23) = 1.91970957781434403430534711... so a(1) = 1.
e^(15/23) * 2! = 3.83941915562868806861... so a(2) = 3.
e^(15/23) * 3! = 11.518257466886064205832... so a(3) = 11.
MATHEMATICA
Floor[Exp[15/23] Range[20]!] (* Harvey P. Dale, Feb 11 2015 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved