# A049313 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 2
5 2
6 6
7 12
8 79
9 792
10 19576
11 886288
12 75369960
13 11856006240
14 3467430423264
15 1893448825054528
16 1938818712501985736
17 3737086626658278741376
18 13606268915761294708760704
19 93863103860384959101157737728