# A085781 (b-file synthesized from sequence entry)
0 1
1 4
2 16
3 62
4 236
5 892
6 3368
7 12742
8 48364
9 184244
10 704408
11 2702108
12 10396504
13 40108408
14 155101136
15 601047622
16 2333540684
17 9075004228
18 35345001656
19 137846004532
20 538256825864
21 2104096866568
22 8233426533296
23 32247595294492