# A375276 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 24
4 92
5 360
6 1448
7 5888
8 24144
9 99744
10 414432
11 1729920
12 7249088
13 30476416
14 128487552
15 543014912
16 2299764992
17 9758138880
18 41473582592
19 176530905088
20 752401603584
21 3210723420160
22 13716154361856
23 58653842276352
24 251049168687104
25 1075442759868416