# A068739 (b-file synthesized from sequence entry)
1 1
2 2
3 5
4 13
5 31
6 72
7 156
8 337
9 701
10 1452
11 2964
12 6001
13 12108
14 24324
15 48871
16 97988
17 196224
18 392768
19 785946
20 1572353
21 3145554
22 6291980