# A148575 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 6
4 20
5 50
6 181
7 513
8 1981
9 6087
10 24450
11 79265
12 326192
13 1098561
14 4604660
15 15968636
16 67934917
17 241144724
18 1037831560
19 3753744245
20 16303956286
21 59889623003
22 262114436704
23 975484574708
24 4296973313554
25 16171297126704
26 71624751796375
27 272169868078628
28 1211149718585558
29 4641314003656235