# A354750 (b-file synthesized from sequence entry)
0 1
1 1
2 -1
3 6
4 -48
5 534
6 -7542
7 129240
8 -2603736
9 60292512
10 -1577546928
11 46021512096
12 -1480976147664
13 52110720451152
14 -1990258155061776
15 81995762243700864
16 -3624527727510038784
17 171109526616468957312
18 -8591991935936929932672
19 457246520477143117555968