# A124721 (b-file synthesized from sequence entry)
4 2
5 8
6 26
7 80
8 224
9 596
10 1536
11 3840
12 9384
13 22528
14 53248
15 124240
16 286720
17 655360
18 1485472
19 3342336
20 7471104
21 16602432
22 36700160
23 80740352
24 176859776
25 385875968
26 838860800
27 1817531648
28 3925868544
29 8455716864
30 18164132352
31 38923141120