# A180070 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 12
5 44
6 116
7 374
8 1428
9 5960
10 26016
11 120570
12 590598
13 3065372
14 16566508
15 92827128
16 542485764
17 3298228302
18 20696614200
19 133722820270
20 892046755174
21 6136788856858
22 43308637312440
23 313079705562778
24 2322726645160856