# A152548 (b-file synthesized from sequence entry)
0 1
1 4
2 10
3 24
4 54
5 120
6 260
7 560
8 1190
9 2520
10 5292
11 11088
12 23100
13 48048
14 99528
15 205920
16 424710
17 875160
18 1798940
19 3695120
20 7574996
21 15519504
22 31744440
23 64899744
24 132503644
25 270415600
26 551231800
27 1123264800
28 2286646200
29 4653525600