# A081686 (b-file synthesized from sequence entry)
0 1
1 1
2 -1
3 19
4 467
5 5611
6 53459
7 455659
8 3648707
9 28119691
10 211372019
11 1562038699
12 11405181347
13 82545287371
14 593501306579
15 4245828252139
16 30255066944387
17 214924122640651
18 1522971386761139
19 10770190567911979
20 76039651374633827
21 536127709619251531
22 3775797660906839699
23 26567026101757594219