# A124998 (b-file synthesized from sequence entry)
0 1
1 32
2 154
3 578
4 2542
5 11242
6 51004
7 234168
8 1086342
9 5078522
10 23889964
11 112953048
12 536316184
13 2555650688
14 12215701582
15 58545624238
16 281245522518
17 1353858728442
18 6529181968828
19 31539774822672
20 152581524133232