# A126518 (b-file synthesized from sequence entry)
0 1
1 23
2 187
3 1563
4 13187
5 111855
6 951843
7 8116589
8 69304469
9 592275463
10 5064405547
11 43320119881
12 370639572699
13 3171604704237
14 27142404725961
15 232297572817893
16 1988192727095313
17 17017021355308651
18 145651801767851231