# A367720 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 1
4 1
5 121
6 721
7 2521
8 6721
9 196561
10 3659041
11 29993041
12 159762241
13 1686639241
14 60298558321
15 987112886761
16 9315623640961
17 76611297104161
18 2454331471018561
19 69805324167893281
20 1086439146068753281
21 62621251106366355481
22 1358219171406244427281