# A167495 (b-file synthesized from sequence entry)
1 2
2 3
3 5
4 13
5 31
6 61
7 139
8 283
9 571
10 1153
11 2311
12 4651
13 9343
14 19141
15 38569
16 77419
17 154873
18 310231
19 621631
20 1243483
21 2486971
22 4974721