# A181896 (b-file synthesized from sequence entry)
4 5
5 11
6 27
7 71
8 201
9 603
10 1905
11 6318
12 21888
13 78912
14 295260
15 1143536
16 4574144
17 18859680
18 80014848
19 348776640
20 1559776320
21 7147792848
22 33526120320
23 160785625902
24 787685472000
25 3938427360000
26 20082117976800
27 104349745817240
28 552166953609600
29 2973510046027938