# A377859 (b-file synthesized from sequence entry)
0 1
1 0
2 1
3 2
4 21
5 144
6 1765
7 21552
8 340137
9 5845760
10 116495721
11 2550320640
12 62023290109
13 1642735460352
14 47321500546125
15 1469008742856704
16 48962556079079505
17 1742660440701861888
18 65993849612007279697
19 2648999558505185280000
20 112360563741545020804581