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A088101
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Group the natural numbers with at least two members in each group such that the n-th group sum is a multiple of n. (1,2),(3,4,5,),(6,7,8),(9,10,11,12,13,14,15),(16,17,18,19),(20,21,22,23,24,25,26,27,28),(29,30,31,32,33,34),... Sequence contains the n-th group sum divided by n.
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%I #4 Dec 05 2013 19:56:33
%S 3,6,7,21,14,36,27,55,44,28,22,16,66,78,31,223,136,66,153,171,55,45,
%T 117,45,117,45,117,45,117,45,117,45,117,45,117,45,117,45,117,45,117,
%U 45,117,45,117,45,117,45,117,45,117,45,117,45,117,45,117,45,117,45,117,45,117
%N Group the natural numbers with at least two members in each group such that the n-th group sum is a multiple of n. (1,2),(3,4,5,),(6,7,8),(9,10,11,12,13,14,15),(16,17,18,19),(20,21,22,23,24,25,26,27,28),(29,30,31,32,33,34),... Sequence contains the n-th group sum divided by n.
%C The condition 'at least two terms' is imposed to avoid the trivial grouping (1),(2),(3),(4),(5),...
%Y Cf. A088099, A088100.
%K nonn
%O 1,1
%A _Amarnath Murthy_, Sep 24 2003
%E More terms from _Ray Chandler_, Oct 13 2003
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