a(n) = (n^8 - 60*n^6 + 90*n^5 + 1160*n^4 - 3204*n^3 - 5349*n^2 + 26586*n - 23760)/24.

Terms

a(0) =0a(1) =35a(2) =1430a(3) =13941a(4) =75205a(5) =289800a(6) =897165a(7) =2379300a(8) =5620846a(9) =12135825a(10) =24377000a(11) =46145495a(12) =83119995a(13) =143526526a(14) =238971495a(15) =385462350a(16) =604641900a(17) =925264015a(18) =1384940106a(19) =2032187465a(20) =2928812225a(21) =4152661380a(22) =5800779985a(23) =7993011336a(24) =10876079610a(25) =14628196125