# A084857 (b-file synthesized from sequence entry)
0 0
1 1
2 10
3 48
4 176
5 560
6 1632
7 4480
8 11776
9 29952
10 74240
11 180224
12 430080
13 1011712
14 2351104
15 5406720
16 12320768
17 27852800
18 62521344
19 139460608
20 309329920
21 682622976
22 1499463680
23 3279945728
24 7147094016
25 15518924800
26 33587986432