# A357831 (b-file synthesized from sequence entry) 0 1 1 0 2 0 3 2 4 12 5 70 6 454 7 3332 8 27552 9 254400 10 2598852 11 29125932 12 355455468 13 4693396656 14 66671326176 15 1013916648840 16 16436063079552 17 282920894841096 18 5153797995148296 19 99052313167391760 20 2003040751641857856 21 42513854724369719136 22 944959706480298199824