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%I #11 Sep 18 2019 20:49:15
%S 0,1,3,6,10,15,21,28,36,45,55,66,78,91,105,120,136,153,171,190,210,
%T 231,253,276,300,325,351,378,406,435,465,496,528,561,595,630,666,703,
%U 741,780,820,861,903,946,990,1035,1081,1128,1176,1225,1275,1326,1378,1431,1485,1540,1596,1653,1711,1770,1830,1891,1953,2016,32
%N a(n) = n*(n+1)/2 mod 2048.
%C Period 4096. - _Charles R Greathouse IV_, Oct 16 2012
%t Mod[Accumulate[Range[0,70]],2048] (* _Harvey P. Dale_, Sep 18 2019 *)
%o (PARI) a(n)=n*(n+1)/2%2048 \\ _Charles R Greathouse IV_, Oct 16 2012
%Y See A105198 for further information.
%K nonn,easy
%O 0,3
%A _Oscar Takeshita_, May 01 2005
%E Removed formulas that were wrong at indices >= 65 because the "mod 2048" part of the definition had been ignored _R. J. Mathar_, Jan 26 2010
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