OFFSET
0,2
COMMENTS
A010050(n) / a(n) is the probability that there will be no intersections among n rays in the plane with endpoints chosen randomly, uniformly, and independently on a given line segment and angles chosen randomly, uniformly, and independently in [0, 2*Pi). - Jason Zimba, Apr 03 2022
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..172
FORMULA
a(0) = 1; a(n) = 2*n^3*a(n-1) for n >= 1. - Georg Fischer, May 23 2021
MATHEMATICA
Table[2^n*(n!)^3, {n, 0, 20}] (* G. C. Greubel, Dec 12 2022 *)
PROG
(PARI) for(n=0, 20, print1(2^n*(n!)^3, ", "));
(Magma) [2^n*Factorial(n)^3: n in [0..20]]; // G. C. Greubel, Dec 12 2022
(SageMath) [2^n*factorial(n)^3 for n in range(21)] # G. C. Greubel, Dec 12 2022
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Cino Hilliard, Nov 08 2003
EXTENSIONS
Offset corrected from 1 to 0 and definition changed by Georg Fischer, May 23 2021
STATUS
approved