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%I #5 Mar 30 2012 18:58:10
%S 4,11,7,21,17,10,34,30,23,13,50,46,39,29,16,69,65,58,48,35,19,91,87,
%T 80,70,57,41,22,116,112,105,95,82,66,47,25,144,140,133,123,110,94,75,
%U 53,28,175,171,164,154,141,125,106,84,59,31,209,205,198,188,175
%N Ordered differences of distinct pentagonal numbers.
%C For a guide to related sequences, see A204892.
%e a(1)=s(2)-s(1)=5-1=4
%e a(2)=s(3)-s(1)=12-1=11
%e a(3)=s(3)-s(2)=12-5=7
%e a(4)=s(4)-s(1)=22-1=21
%e a(5)=s(4)-s(2)=22-5=17
%t (See the program at A205138.)
%Y Cf. A205138, A204892.
%K nonn
%O 1,1
%A _Clark Kimberling_, Jan 25 2012
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