# A002910 (b-file synthesized from sequence entry)
0 1
1 3
2 6
3 12
4 24
5 48
6 90
7 168
8 318
9 600
10 1098
11 2004
12 3696
13 6792
14 12270
15 22140
16 40224
17 72888
18 130650
19 234012
20 421176
21 756624
22 1348998
23 2403840
24 4299018
25 7677840
26 13635630
27 24206220
28 43092888
29 76635984
30 135698970
31 240199320
32 426144654
33 755420328
34 1334488074