# A138413 (b-file synthesized from sequence entry)
0 0
1 0
2 2
3 18
4 186
5 2120
6 25724
7 325878
8 4260282
9 57048048
10 778483932
11 10786724388
12 151355847012
13 2146336125648
14 30711521221376
15 442862000693438
16 6429286894263738
17 93891870710425440
18 1378379704593824300
19 20330047491994213884
20 301111732041234778316
21 4476705468260134734384
22 66784808491631598524136