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A025207 a(n) = [ Sum{(log(j)-log(i))^3} ], 2 <= i < j <= n. 0

%I

%S 0,0,1,3,5,9,15,22,31,42,55,71,88,108,131,157,185,216,249,286,326,369,

%T 415,464,516,572,632,694,760,830,903,980,1060,1144,1232,1323,1418,

%U 1517,1620,1727,1837,1952,2070,2192,2319,2449,2584,2722,2865,3011,3162,3317,3476,3639,3807

%N a(n) = [ Sum{(log(j)-log(i))^3} ], 2 <= i < j <= n.

%K nonn

%O 3,4

%A _Clark Kimberling_

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Last modified October 23 03:21 EDT 2019. Contains 328335 sequences. (Running on oeis4.)