# A016198 (b-file synthesized from sequence entry)
0 1
1 8
2 47
3 250
4 1281
5 6468
6 32467
7 162590
8 813461
9 4068328
10 20343687
11 101722530
12 508620841
13 2543120588
14 12715635707
15 63578244070
16 317891351421
17 1589457019248
18 7947285620527
19 39736429151210
20 198682147853201
21 993410743460308
22 4967053725690147
23 24835268645227950