# A353584 (b-file synthesized from sequence entry) 1 1 2 1 3 3 4 3 5 15 6 15 7 315 8 105 9 567 10 405 11 155925 12 467775 13 1216215 14 34749 15 638512875 16 638512875 17 2170943775 18 32564156625 19 1856156927625 20 3093594879375 21 38979295480125 22 5568470782875 23 49308808782358125 24 2900518163668125 25 284473896821296875 26 1232720219558953125