# A353664 (b-file synthesized from sequence entry) 0 1 1 0 2 0 3 6 4 36 5 150 6 900 7 9366 8 101556 9 1031190 10 10995300 11 134640726 12 1844184276 13 26656678230 14 400614423300 15 6347263038486 16 106960986110196 17 1905688502565270 18 35546025523227300 19 691014283378745046 20 13999772792477879316 21 295570215436360196310