# A091152 (b-file synthesized from sequence entry)
0 1
1 3
2 9
3 29
4 103
5 405
6 1757
7 8355
8 43229
9 241677
10 1451103
11 9309961
12 63550785
13 459867819
14 3516536269
15 28337741649
16 240056534347
17 2133028001257
18 19839848253937
19 192812840531511
20 1954556549898449
21 20634173429269633