# A067545 (b-file synthesized from sequence entry)
1 4
2 23
3 176
4 1513
5 14457
6 166587
7 2248791
8 32564154
9 503597430
10 8788183110
11 170834934690
12 3490028350200
13 74757188482200
14 1750213790778600
15 42713495459510400
16 1084838134027536000
17 28630810173210336000