# A152143 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 40 4 15 5 451 6 160 7 4901 8 1785 9 55480 10 20295 11 630631 12 230400 13 7152809 14 2612233 15 81089800 16 29614935 17 919350379 18 335764960 19 10423396429 20 3806834625 21 118178205080 22 43161016271 23 1339876575119 24 489349324800 25 15191201606801