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

0, 0, 1, 3, 5, 9, 15, 22, 31, 42, 55, 71, 88, 108, 131, 157, 185, 216, 249, 286, 326, 369, 415, 464, 516, 572, 632, 694, 760, 830, 903, 980, 1060, 1144, 1232, 1323, 1418, 1517, 1620, 1727, 1837, 1952, 2070, 2192, 2319, 2449, 2584, 2722, 2865, 3011, 3162, 3317, 3476, 3639, 3807

Offset

3,4

Links

Table of n, a(n) for n=3..57.

Crossrefs

Sequence in context: A061954 A095039 A022940 * A027688 A118403 A033498

Adjacent sequences: A025204 A025205 A025206 * A025208 A025209 A025210

Keyword

nonn

Author

Clark Kimberling

Status

approved