# A112709 (b-file synthesized from sequence entry) 0 1 1 2 2 2 3 5 4 14 5 65 6 376 7 2613 8 20761 9 184756 10 1816330 11 19526217 12 227588213 13 2855033988 14 38311846704 15 547128228043 16 8279365967056 17 132259968568859 18 2223048616707842 19 39199883209336095 20 723269314782624612