# A047096 (b-file synthesized from sequence entry)
0 1
1 3
2 11
3 38
4 139
5 506
6 1881
7 7019
8 26449
9 100111
10 381060
11 1455872
12 5583063
13 21472978
14 82810941
15 320094718
16 1239852777
17 4811195125
18 18700386300
19 72792837115
20 283731854748
21 1107273926974
22 4325975674774
23 16918209611354