# A085973 (b-file synthesized from sequence entry)
0 3
1 2
2 5
3 22
4 123
5 800
6 5754
7 44514
8 363893
9 3106288
10 27457050
11 249768040
12 2327398572
13 22135606604
14 214270565106
15 2106151496858
16 20982672402385
17 211545853142240
18 2155553788108702
19 22174250217880984
20 230075164780356214