# A047767 (b-file synthesized from sequence entry)
1 0
2 1
3 2
4 2
5 7
6 12
7 29
8 55
9 143
10 271
11 728
12 1428
13 3873
14 7752
15 21318
16 43256
17 120175
18 246675
19 690678
20 1430715
21 4032015
22 8414610
23 23841480
24 50067108
25 142498637
26 300830572
27 859515920
28 1822766377
29 5225264024
30 11124755664
31 31983672261