# A026387 (b-file synthesized from sequence entry)
0 2
1 8
2 34
3 150
4 678
5 3116
6 14494
7 68032
8 321590
9 1528776
10 7301142
11 35003238
12 168359754
13 812041860
14 3926147730
15 19022666310
16 92338836390
17 448968093320
18 2186194166950
19 10659569748370
20 52037098259090
21 254308709196660