# A335087 (b-file synthesized from sequence entry)
0 1
1 7
2 34
3 150
4 628
5 2540
6 10024
7 38840
8 148368
9 560368
10 2096928
11 7786592
12 28726592
13 105390272
14 384788096
15 1398978432
16 5067403520
17 18294707968
18 65854095872
19 236421150208
20 846732997632
21 3025927678976
22 10792083499008
23 38420157773824
24 136547503083520
25 484546494459904
26 1716976084393984