# A149080 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 7
4 28
5 70
6 280
7 787
8 3148
9 9526
10 38104
11 120922
12 483688
13 1586248
14 6344992
15 21342211
16 85368844
17 292614958
18 1170459832
19 4075263994
20 16301055976
21 57458624464
22 229834497856
23 818786992666
24 3275147970664
25 11769370428016
26 47077481712064
27 170479948663240
28 681919794652960
29 2485397985195496