# A334976 (b-file synthesized from sequence entry)
0 0
1 0
2 3
3 19
4 108
5 609
6 3468
7 20007
8 116886
9 690690
10 4122495
11 24823188
12 150629248
13 920274804
14 5656456104
15 34954487967
16 217044280458
17 1353539406660
18 8474029162305
19 53241343026795
20 335592121524660
21 2121577490385885
22 13448859209014320
23 85467026778421860