# A299502 (b-file synthesized from sequence entry)
0 1
1 3
2 13
3 59
4 277
5 1347
6 6685
7 33675
8 171493
9 880531
10 4550125
11 23633627
12 123272117
13 645247715
14 3387538621
15 17830213931
16 94058445445
17 497152260915
18 2632288649869
19 13958805204603
20 74124967884373
21 394115410904195
22 2097849420888925
23 11178238250228427