# A307976 (b-file synthesized from sequence entry)
0 0
1 1
2 2
3 7
4 22
5 73
6 242
7 838
8 2951
9 10661
10 39169
11 146231
12 552791
13 2112791
14 8149184
15 31683277
16 124030331
17 488484081
18 1934137711
19 7694617999
20 30742092365
21 123294683460
22 496206766654
23 2003331980722
24 8111420525097
25 32929963668470
26 134012337268578
27 546609050991988
28 2234166616090803