# A074444 (b-file synthesized from sequence entry)
1 0
2 0
3 0
4 6
5 36
6 180
7 1008
8 6048
9 34272
10 180662
11 940896
12 5018112
13 27433728
14 152845056
15 862725426
16 4895520768
17 27770211072
18 157364529408
19 892662156288
20 5078255822436
21 28990266218496
22 166029537715200
23 953309368018944
24 5484206701412352
25 31596861676172076