# A112709 (b-file synthesized from sequence entry)
0 1
1 2
2 2
3 5
4 14
5 65
6 376
7 2613
8 20761
9 184756
10 1816330
11 19526217
12 227588213
13 2855033988
14 38311846704
15 547128228043
16 8279365967056
17 132259968568859
18 2223048616707842
19 39199883209336095
20 723269314782624612