# A059272 (b-file synthesized from sequence entry)
0 0
1 1
2 2
3 9
4 47
5 272
6 1685
7 10939
8 73462
9 506111
10 3557109
11 25404296
12 183834627
13 1344987117
14 9932411282
15 73937697965
16 554234827675
17 4179895359240
18 31693701617841
19 241467983156655
20 1847602171074502
21 14191725625366331
22 109390959408760713