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[ Sum{(sqrt(j+1)-sqrt(i+1))^3} ], 1 <= i < j <= n.
0

%I #5 Mar 30 2012 18:56:01

%S 0,0,0,2,5,10,18,29,44,65,92,127,169,222,285,360,449,553,673,811,968,

%T 1146,1346,1570,1821,2099,2406,2744,3116,3522,3965,4447,4970,5535,

%U 6146,6803,7510,8268,9079,9946,10871,11857,12905,14017,15198,16447,17769,19166,20640,22193,23829

%N [ Sum{(sqrt(j+1)-sqrt(i+1))^3} ], 1 <= i < j <= n.

%K nonn

%O 1,4

%A _Clark Kimberling_

%E Corrected by Neven Juric (neven.juric(AT)apis-it.hr), May 04 2006