# A193777 (b-file synthesized from sequence entry) 0 1 1 2 2 6 3 18 4 58 5 190 6 642 7 2206 8 7746 9 27662 10 100738 11 373550 12 1413506 13 5457710 14 21546466 15 87025806 16 360264258 17 1529624366 18 6669850466 19 29877013902 20 137560725890 21 650780790894 22 3162711095074 23 15774862353614 24 80687636530882 25 422713072650286 26 2265833731786594