# A003610 (b-file synthesized from sequence entry)
1 2
2 6
3 8
4 8
5 56
6 24
7 168
8 240
9 608
10 920
11 5680
12 6104
13 18416
14 43008
15 148152
16 325608
17 980840
18 2421096
19 7336488
20 19769312
21 58192608
22 164776248
23 502085760
24 1427051544
25 4261678656
26 12615722288
27 37914214232
28 113567513528
29 343641240328
30 1039134670952