# A012018 (b-file synthesized from sequence entry)
0 1
1 -1
2 1
3 47
4 897
5 26911
6 2176769
7 269558351
8 38463601409
9 6445724731199
10 1297792574780417
11 307585734223517551
12 82426762826906376833
13 23816926512873022989919
14 6844111898535212011277057