# A361569 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 0
4 1
5 20
6 180
7 840
8 1715
9 2520
10 88200
11 1940400
12 29111775
13 303603300
14 2188286100
15 12549537000
16 143029511625
17 3397035642000
18 71419225878000
19 1170096883956000
20 15075357741068625
21 163540869094102500
22 2025016641129982500
23 40912918773391665000