# A377233 (b-file synthesized from sequence entry)
0 1
1 6
2 51
3 456
4 4191
5 39174
6 370329
7 3529284
8 33838854
9 325978044
10 3152058630
11 30572797920
12 297294956070
13 2897207397420
14 28286321963370
15 276611636831640
16 2708781551458665
17 26559205696513590
18 260695647288540915
19 2561413004129212440
20 25188928968792165495