# A067305 (b-file synthesized from sequence entry)
0 1
1 5
2 36
3 328
4 3440
5 39408
6 478912
7 6068480
8 79315200
9 1061628160
10 14480086016
11 200540018688
12 2812618092544
13 39867889037312
14 570237130752000
15 8219880968028160
16 119293333282291712
17 1741605394647416832