# A085277 (b-file synthesized from sequence entry)
0 1
1 7
2 30
3 108
4 360
5 1152
6 3600
7 11088
8 33840
9 102672
10 310320
11 935568
12 2815920
13 8466192
14 25435440
15 76380048
16 229287600
17 688157712
18 2065062960
19 6196368528
20 18591464880
21 55779113232
22 167346776880
23 502059205008
24 1506215363760