# A104365 (b-file synthesized from sequence entry)
1 2
2 3
3 7
4 13
5 61
6 181
7 1261
8 2521
9 7561
10 37801
11 415801
12 1247401
13 16216201
14 113513401
15 567567001
16 1135134001
17 19297278001
18 57891834001
19 1099944846001
20 5499724230001
21 38498069610001
22 423478765710001
23 9740011611330001