# A055146 (b-file synthesized from sequence entry)
1 1
2 7
3 38
4 194
5 971
6 4855
7 24276
8 121381
9 606906
10 3034532
11 15172661
12 75863308
13 379316541
14 1896582709
15 9482913547
16 47414567735
17 237072838677
18 1185364193386
19 5926820966932
20 29634104834662
21 148170524173312