# A294037 (b-file synthesized from sequence entry)
0 1
1 4
2 16
3 64
4 232
5 544
6 -1664
7 -37376
8 -362024
9 -2743712
10 -17780864
11 -98955776
12 -442825664
13 -1129423616
14 5536033792
15 118591811584
16 1224814969816
17 9905491019104
18 68032143081856
19 398051159254528
20 1854461906222272
21 4784426026102528