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A242681 The number of ways that a score of n can be obtained using two darts on a standard dartboard. 4

%I #8 May 21 2014 09:18:16

%S 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,11,11,12,12,13,13,13,

%T 13,13,13,14,14,14,14,14,14,15,15,15,15,15,14,15,14,14,14,14,14,16,14,

%U 15,14,14,13,15,13,15,13,13,12,14,11,14,11,11,10,11,8,12,8,8,9,9,6,10,6,6,7,6,4,8,4,4,6,4,3,7,2,3,5,2,2,5,1,2,4,2,1,4,0,1,3,0,1,3,0,1,2,0,0,2,0,0,1,0,0,1

%N The number of ways that a score of n can be obtained using two darts on a standard dartboard.

%C It is assumed that each of the two darts scores.

%H Wikipedia, <a href="http://en.wikipedia.org/wiki/Darts">Darts</a>

%e a(2) = 1 because the only possible throw is (1,1).

%e a(7) = 3 because possible throws are (1,6), (2,5) and (3,4).

%e a(103) = 0 because it is not possible to get a score of 103.

%Y Cf. A241746, A242678, A242717, A242718.

%K nonn,fini,full

%O 2,3

%A _Colin Barker_, May 20 2014

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