# A084899 (b-file synthesized from sequence entry)
0 0
1 1
2 9
3 42
4 152
5 480
6 1392
7 3808
8 9984
9 25344
10 62720
11 152064
12 362496
13 851968
14 1978368
15 4546560
16 10354688
17 23396352
18 52494336
19 117047296
20 259522560
21 572522496
22 1257242624
23 2749366272
24 5989466112
25 13002342400
26 28135391232