# A148463 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 18
5 63
6 238
7 921
8 3724
9 15481
10 65567
11 282538
12 1236274
13 5472661
14 24462349
15 110348896
16 501604455
17 2294792044
18 10560615629
19 48858061607
20 227074658274
21 1059724267133
22 4964418948999
23 23335624138336
24 110026811495899
25 520243459277072
26 2466277600473485
27 11719307714768490
28 55809636116165236