# A149375 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 12
4 47
5 164
6 695
7 2699
8 11928
9 48830
10 220914
11 940961
12 4321991
13 18937219
14 87972118
15 393301987
16 1843766751
17 8369121619
18 39519636049
19 181547249045
20 862251480517
21 3999666690154
22 19086139896338
23 89240905816222
24 427543488272411
25 2012304113539057
26 9673425072162760
27 45783191013294482