# A123593 (b-file synthesized from sequence entry)
0 1
1 2
2 2
3 -4
4 8
5 -16
6 34
7 -74
8 158
9 -328
10 668
11 -1344
12 2666
13 -5176
14 9786
15 -18080
16 33160
17 -62046
18 121924
19 -254864
20 559442
21 -1253358
22 2788712
23 -6050598
24 12678984
25 -25562296
26 49559770
27 -92527702
28 166783286
29 -291322324
30 495620212
31 -827188226
32 1368439702
33 -2276801082
34 3882595072