# A326324 (b-file synthesized from sequence entry)
0 1
1 1
2 6
3 46
4 456
5 5656
6 84336
7 1467376
8 29175936
9 652606336
10 16219458816
11 443419545856
12 13224580002816
13 427278468668416
14 14867050125981696
15 554245056343668736
16 22039796215883268096
17 931198483176870608896
18 41658202699736550014976
19 1967160945260218035798016