# A177122 (b-file synthesized from sequence entry)
0 1
1 6
2 15
3 70
4 325
5 1721
6 9449
7 54208
8 318943
9 1918427
10 11731931
11 72746099
12 456238871
13 2889149141
14 18447220199
15 118630723058
16 767675233277
17 4995186818805
18 32662752627705
19 214514289725729
20 1414397208516269