a(n) = n^7*(n^8 + 1)/2.A168665a(n) = n^7*(n^8 + 1)/2.Terms a(0) =0a(1) =1a(2) =16448a(3) =7175547a(4) =536879104a(5) =15258828125a(6) =235092632256External referencesoeis: A168665