# A367880 (b-file synthesized from sequence entry)
0 1
1 0
2 4
3 6
4 104
5 490
6 7452
7 65534
8 1062224
9 13825746
10 252414020
11 4303920742
12 89701635960
13 1870259792570
14 44391086228972
15 1085906907998670
16 29112549152845472
17 813723252665063842
18 24402507959486170260
19 765358519469125339190