# A073774 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 4
4 68
5 376
6 1440
7 4736
8 14272
9 40576
10 110592
11 291840
12 750592
13 1890304
14 4677632
15 11403264
16 27443200
17 65306624
18 153878528
19 359399424
20 832831488
21 1916272640
22 4380950528
23 9957277696
24 22510829568
25 50642026496
26 113413980160