# A193100 (b-file synthesized from sequence entry) 0 1 1 3 2 63 3 6804 4 1990170 5 1145276496 6 1172421884088 7 1981846981092069 8 5166650461467914874 9 19710026486212156729362 10 105613632141369240315500892 11 768455476842781911036557334267 12 7380326961188107570497477933701847