# A370480 (b-file synthesized from sequence entry) 0 1 1 3 2 15 3 73 4 360 5 1800 6 9112 7 46632 8 240936 9 1255336 10 6589080 11 34811784 12 184990568 13 988156872 14 5303039256 15 28579068520 16 154605138984 17 839272725864 18 4570409517848 19 24961191298248 20 136688674353000 21 750355591919240 22 4128471397725336 23 22762905189252264