# A151498 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 12
4 57
5 301
6 1707
7 10191
8 63244
9 404503
10 2650293
11 17709684
12 120288313
13 828352036
14 5771747783
15 40625485570
16 288482116987
17 2064429518054
18 14874855533504
19 107832596542894
20 785986247826371
21 5757192302807027
22 42357833323697589
23 312901369167191854
24 2319946973815289676