# A098644 (b-file synthesized from sequence entry)
1 0
2 0
3 0
4 1
5 3
6 7
7 30
8 129
9 710
10 5233
11 51819
12 709352
13 13710800
14 379963761
15 15289965453
16 902291244954
17 78717614351420
18 10220774050567926
19 1986419713778008167
20 580763090016320217550
21 256553735019174430718651