# A065692 (b-file synthesized from sequence entry)
0 0
1 3
2 24
3 117
4 417
5 1140
6 2583
7 7311
8 39840
9 251613
10 1329969
11 5738172
12 20838447
13 67344735
14 216818808
15 812592261
16 3660235905
17 17401156548
18 78077421639
19 318790895727
20 1197423287952
21 4316735957805
22 15912781695633