# A353148 (b-file synthesized from sequence entry) 0 0 1 1 2 12 3 133 4 1464 5 16215 6 178366 7 2073137 8 22814518 9 252060710 10 2772667811 11 31610457022 12 347715137243 13 3835866520674 14 43305642727525 15 476363171113776 16 5351104882252647 17 58862154814780228 18 658583714063682520 19 7355531854711617721 20 82021851512827806032