OFFSET
4,3
COMMENTS
It is assumed that each of the four darts scores.
LINKS
Colin Barker, Table of n, a(n) for n = 4..240
Wikipedia, Darts
EXAMPLE
a(4) = 1 because the only possible throw is (1,1,1,1).
a(7) = 3 because possible throws are (1,1,1,4), (1,1,2,3) and (1,2,2,2).
a(223) = 0 because it is not possible to get a score of 223.
CROSSREFS
KEYWORD
nonn,fini,full
AUTHOR
Colin Barker, May 21 2014
STATUS
approved