# A143170 (b-file synthesized from sequence entry)
0 1
1 45
2 1680
3 62790
4 2471175
5 104085135
6 4712781150
7 229345716600
8 11970744110325
9 668241679730625
10 39773331191493900
11 2516317288024790250
12 168723807382851595875
13 11956978164372003637875
14 893260022082269487896250
15 70178395183380972653665500