# A081670 (b-file synthesized from sequence entry)
0 1
1 4
2 14
3 46
4 150
5 494
6 1652
7 5618
8 19430
9 68302
10 243804
11 882578
12 3235596
13 11994922
14 44899568
15 169466426
16 644127110
17 2462746382
18 9462555788
19 36507525266
20 141333313220
21 548718227642
22 2135480023328
23 8327573906426
24 32530033219580