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Sums of groups in A075643.
4

%I #4 Dec 05 2013 19:55:39

%S 2,9,16,55,78,112,232,342,420,605,852,1053,1330,1650,2144,2601,3168,

%T 3534,4420,5229,5984,6670,7440,8950,10478,11232,12712,13775,15510,

%U 17236,19200,20526,22780,26040,27756,29896,32452,35958,39120,41533,45570

%N Sums of groups in A075643.

%C a(n) is a multiple of (n+1).

%Y Cf. A075643, A075644, A075646, A075647.

%K nonn

%O 1,1

%A _Amarnath Murthy_, Sep 30 2002

%E More terms from _David Wasserman_, Jan 22 2005