# A218306 (b-file synthesized from sequence entry)
0 1
1 2
2 20
3 392
4 11648
5 466112
6 23517824
7 1434077696
8 102618951680
9 8432793964544
10 782753794531328
11 81007725700038656
12 9249066952457584640
13 1154952975718091325440
14 156588371428134115868672
15 22908199202756436344963072
16 3597006040171205977538822144