# A353978 (b-file synthesized from sequence entry)
1 4
2 9
3 24
4 71
5 224
6 740
7 2496
8 8565
9 29792
10 104701
11 371304
12 1326702
13 4771380
14 17256161
15 62712800
16 228883359
17 838492436
18 3081972336
19 11361867384
20 41998361480
21 155620033360
22 577900838281