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(Sum of n-th group in A075643)/(n+1).
4

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

%S 1,3,4,11,13,16,29,38,42,55,71,81,95,110,134,153,176,186,221,249,272,

%T 290,310,358,403,416,454,475,517,556,600,622,670,744,771,808,854,922,

%U 978,1013,1085,1120,1184,1252,1314,1354,1441,1489,1536,1633,1713,1753

%N (Sum of n-th group in A075643)/(n+1).

%Y Cf. A075643, A075644, A075645, A075647.

%K nonn

%O 1,2

%A _Amarnath Murthy_, Sep 30 2002

%E More terms from _David Wasserman_, Jan 22 2005