# A019174 (b-file synthesized from sequence entry)
3 0
4 0
5 6
6 4
7 4
8 28
9 40
10 96
11 266
12 520
13 1376
14 3578
15 8040
16 20244
17 52804
18 131856
19 336856
20 878640
21 2280798
22 5949486
23 15628144
24 41156256
25 108761684
26 288173740
27 764922754
28 2035170824
29 5423784708
30 14473513958
31 38687761450