# A203147 (b-file synthesized from sequence entry)
1 1
2 23
3 431
4 7750
5 140274
6 2604744
7 50046408
8 998853264
9 20742534576
10 448372820160
11 10086271796160
12 235977273544320
13 5737221760152960
14 144817445022243840
15 3791415072241843200
16 102851265545431603200
17 2888120485072388966400