# A111542 (b-file synthesized from sequence entry)
0 0
1 2
2 5
3 22
4 128
5 896
6 7220
7 65336
8 653720
9 7155104
10 84998768
11 1089232160
12 14981704736
13 220233312896
14 3447195190592
15 57261708795776
16 1006401042534272
17 18663532970127872
18 364283224523605760
19 7466218532765196800