OFFSET
0,3
FORMULA
a(n) = (2*n)!*Sum[Sum[(i^2)/(i+j), {i, 1, n}], {j, 1, n}]
MATHEMATICA
Table[(2*n)!*Sum[Sum[(i^2)/(i+j), {i, 1, n}], {j, 1, n}], {n, 0, 15}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Alexander Adamchuk, Oct 26 2004
STATUS
approved