# A087813 (b-file synthesized from sequence entry) 1 1 2 4 3 44 4 472 5 63944 6 799416 7 137263244 8 1860249448 9 357974884304 10 1036802274574832 11 15013817777670240 12 47192717951302358280 13 10360599532843724350568 14 154361699651510683256944 15 34589385964787861980005536 16 118349529407778159289257602576