# A149545 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 13
4 55
5 183
6 819
7 2879
8 13133
9 49151
10 225573
11 872295
12 4045205
13 16029755
14 74663695
15 301759043
16 1412144445
17 5789266935
18 27186913513
19 112832278421
20 531322739697
21 2226905904509
22 10512271065583
23 44429462141699
24 210144837585317
25 894555768002507
26 4238535802222079
27 18154480397519071