# A124714 (b-file synthesized from sequence entry)
0 1
1 21
2 61
3 141
4 377
5 1001
6 2737
7 7553
8 21073
9 59217
10 167441
11 475793
12 1357637
13 3887541
14 11165509
15 32152901
16 92802433
17 268398401
18 777651553
19 2256800033
20 6558953917
21 19087539437
22 55614451789
23 162219429293
24 473648632141