3,2

For n>3, a(n) = (n^3+3n^2-10n-6)/6.

Sequence in context: A061043 A098603 A053061 this_sequence A114167 A108302 A084547

Adjacent sequences: A055817 A055818 A055819 this_sequence A055821 A055822 A055823

nonn

Clark Kimberling (ck6(AT)evansville.edu), May 28 2000