# A274258 (b-file synthesized from sequence entry)
0 1
1 7
2 133
3 4140
4 154938
5 6398717
6 281086555
7 12882897819
8 609038885805
9 29481041746958
10 1453894927584477
11 72789271870852237
12 3689808842747726368
13 189006099916444293090
14 9768094831949586349262
15 508712466332195692590121
16 26670630123516854616641671
17 1406503552584980596900001922
18 74559627811441047591493767590