# A302942 (b-file synthesized from sequence entry)
0 0
1 4
2 54
3 490
4 4050
5 32674
6 261954
7 2096770
8 16776450
9 134216194
10 1073738754
11 8589928450
12 68719464450
13 549755789314
14 4398046461954
15 35184371990530
16 281474976514050
17 2251799813292034
18 18014398508695554
19 144115188074283010
20 1152921504603701250
21 9223372036848484354