# A198304 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 4 4 9 5 21 6 54 7 148 8 442 9 1433 10 5061 11 19394 12 80308 13 357241 14 1697870 15 8577240 16 45845235 17 258198133 18 1526631800 19 9445795717 20 60988643813 21 409933740177 22 2862338202947 23 20723903238290 24 155329193200741 25 1203428108558453 26 9624564394649845 27 79357873429159078