# A193658 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 15 4 83 5 503 6 3403 7 25807 8 218451 9 2049687 10 21160667 11 238690847 12 2923054435 13 38641535143 14 548635554795 15 8328494925615 16 134634766604915 17 2309386642312631 18 41897258229334267 19 801610384425038911 20 16132033041827096451