# A107506 (b-file synthesized from sequence entry)
0 1
1 220
2 9482
3 166188
4 1660450
5 11260876
6 57581898
7 237782204
8 831240322
9 2543995388
10 6986455498
11 17539148684
12 40829208354
13 89125931884
14 184069213834
15 362272019868
16 683489419778
17 1242224123932
18 2183844052874
19 3726523300588
20 6190586013986
21 10037135290380