# A027146 (b-file synthesized from sequence entry)
1 1
2 8
3 30
4 224
5 880
6 6656
7 27104
8 206336
9 859392
10 6565888
11 27765760
12 212615168
13 908943360
14 6970998784
15 30045757440
16 230691307520
17 1000634122240
18 7689454223360
19 33522958204928
20 257783270211584
21 1128501249835008
22 8682602001072128
23 38141362595430400
24 293587672402755584