# A121753 (b-file synthesized from sequence entry)
1 1
2 1
3 2
4 6
5 16
6 62
7 230
8 1114
9 5268
10 30702
11 176226
12 1201638
13 8107464
14 63339702
15 491010102
16 4324845834
17 37867131900
18 371275954758
19 3623124865986
20 39137296073094
21 421150512316032
22 4969568447400366
23 58455531552960198