# A026618 (b-file synthesized from sequence entry)
1 1
2 11
3 50
4 212
5 870
6 3509
7 14014
8 55640
9 220116
10 868870
11 3425092
12 13491064
13 53117350
14 209097945
15 823111350
16 3240499440
17 12759776700
18 50254414650
19 197979380220
20 780170359800
21 3075303389340