# A217483 (b-file synthesized from sequence entry)
0 1
1 2
2 15
3 132
4 1565
5 22918
6 400939
7 8160008
8 189453369
9 4942271754
10 143128015943
11 4556517918604
12 158167223290453
13 5945611873120910
14 240619359452963427
15 10430922482219093520
16 482234053313600047217
17 23683786738296923795986