# A307400 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 9
4 28
5 109
6 440
7 1790
8 7537
9 32300
10 140438
11 618608
12 2753510
13 12366672
14 55973926
15 255059808
16 1169143476
17 5387268256
18 24940059514
19 115943355422
20 541047868905
21 2533458659581
22 11900017205866
23 56055896316345
24 264748474342341
25 1253414056154014
26 5947373587731308