# A084850 (b-file synthesized from sequence entry)
0 1
1 5
2 20
3 68
4 208
5 592
6 1600
7 4160
8 10496
9 25856
10 62464
11 148480
12 348160
13 806912
14 1851392
15 4210688
16 9502720
17 21299200
18 47448064
19 105119744
20 231735296
21 508559360
22 1111490560
23 2420113408
24 5251268608
25 11358175232
26 24494735360