# A150906 (b-file synthesized from sequence entry)
0 1
1 2
2 9
3 31
4 141
5 579
6 2637
7 11658
8 53730
9 245184
10 1145615
11 5316641
12 25100260
13 117875813
14 560486938
15 2655943749
16 12697363185
17 60572829215
18 290883443805
19 1394741066965
20 6722843752887
21 32366602118582
22 156491245246286
23 755964200592160
24 3664456744630402
25 17752096869897428
26 86241013154934282