# A149051 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 10 4 39 5 151 6 635 7 2658 8 11572 9 50877 10 227745 11 1027822 12 4690045 13 21555194 14 99723136 15 463989132 16 2170140534 17 10192764711 18 48060915369 19 227407643656 20 1079360842009 21 5136933221246 22 24510436767042 23 117217482663014 24 561731089733592 25 2697053390820434 26 12972299041925345 27 62494501152902793