# A083324 (b-file synthesized from sequence entry)
0 1
1 3
2 11
3 45
4 191
5 813
6 3431
7 14325
8 59231
9 242973
10 990551
11 4019205
12 16249871
13 65522733
14 263668871
15 1059425685
16 4251986111
17 17050860093
18 68332318391
19 273716169765
20 1096025891951
21 4387588255053
22 17560809179111
23 70274609387445