# A089976 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 4
4 8
5 20
6 52
7 146
8 458
9 1498
10 5240
11 19562
12 76006
13 311258
14 1334108
15 5931250
16 27492122
17 132096626
18 655783888
19 3368747018
20 17837850110
21 97228103482
22 545514383396
23 3142793126018
24 18578114240578
25 112620106745570
26 698987455899992
27 4439420959115866
28 28832596784976998
29 191284437539842538