# A164690 (b-file synthesized from sequence entry)
0 1
1 45
2 1980
3 87120
4 3833280
5 168664320
6 7421230080
7 326534122530
8 14367501347760
9 632170057385790
10 27815482440686160
11 1223881223681492640
12 53850773678802946560
13 2369434034687289546240
14 104255097210318976508070