# A010788 (b-file synthesized from sequence entry)
0 0
1 -1
2 -2
3 -1
4 148
5 7499
6 435898
7 32241299
8 3034190248
9 357512009399
10 51798976006198
11 9074564088169799
12 1893681694795266748
13 464586802573524130499
14 132469958743645663494898
15 43458963744363238693849499
16 16258850448552441418587853648
17 6882131151536073693976060834799
18 3272832457519325432770128200645998