# A173610 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 4
4 10
5 25
6 60
7 144
8 384
9 1024
10 2752
11 7396
12 19436
13 51076
14 132888
15 345744
16 938448
17 2547216
18 6977712
19 19114384
20 52748180
21 145564225
22 402295360
23 1111822336
24 3045774336
25 8343726336
26 22798000896
27 62292173056
28 169191995264