# A304646 (b-file synthesized from sequence entry)
0 1
1 6
2 96
3 2684
4 102684
5 4882174
6 274765780
7 17776825674
8 1296734890800
9 105176634515540
10 9386121584857668
11 913956454239335458
12 96439915256928441812
13 10963859751632168911670
14 1336217865100834183214232
15 173821065329476028503742152
16 24041575270091169725708672004
17 3523423542388597676305042145010
18 545466031946082920876465992159128
19 88953328262818340590278809406269142