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%I #7 Aug 23 2020 02:09:19
%S 1,3,6,10,16,24,35,48,64,82,108,136,172,210,257,305,358,415,477,546,
%T 618,695,777,864,961,1060,1162,1268,1382,1508,1639,1777,1922,2070,
%U 2225,2400,2577,2757,2939,3128,3325,3531,3740,3959,4180,4416,4654,4895,5138,5391
%N a(n) = Sum_{i=1..n} Ulam(i), where Ulam(i) denotes the i-th Ulam number.
%H Amiram Eldar, <a href="/A078663/b078663.txt">Table of n, a(n) for n = 1..10000</a>
%Y Cf. A002858.
%K easy,nonn
%O 1,2
%A _Joseph L. Pe_, Dec 15 2002
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