# A126488 (b-file synthesized from sequence entry)
0 1
1 20
2 128
3 840
4 5560
5 36988
6 246840
7 1650808
8 11056590
9 74130748
10 497387482
11 3339002940
12 22423219250
13 150623072388
14 1011962290858
15 6799752144942
16 45694220498130
17 307084056184964
18 2063824981953422
19 13870824556736138