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%I #7 Dec 05 2013 19:56:45
%S 0,3,54,2510,60045,1627899,124324172,1694579004,446626219995,
%T 73706596563545,177223661334654,171986625946535322,
%U 3290057629552053269,551042196782556679095,71028805196838414285240
%N Smallest k such that for 0 <= i < n, n*(n+1)/2-i divides k+i.
%F a(n) = A061431(n)-n*(n+1)/2.
%e a(4) = 2510 because 7 divides 2513, 8 divides 2512, 9 divides
%e 2511 and 10 divides 2510.
%Y Cf. A091795, A091797.
%K nonn,easy
%O 1,2
%A _Amarnath Murthy_, Feb 18 2004
%E Edited and extended by _David Wasserman_, Dec 27 2005
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