# A051253 (b-file synthesized from sequence entry)
3 1
4 4
5 6
6 18
7 36
8 80
9 172
10 360
11 760
12 1576
13 3264
14 6720
15 13776
16 28160
17 57376
18 116640
19 236608
20 479104
21 968640
22 1955712
23 3944064
24 7945856
25 15993856
26 32168448
27 64656640
28 129879040
29 260759040
30 523289088
31 1049711616
32 2104967168
33 4219743232
34 8456841216
35 16944388096