# A006217 (b-file synthesized from sequence entry)
0 5
1 16
2 56
3 224
4 1024
5 5296
6 30656
7 196544
8 1383424
9 10608976
10 88057856
11 786632864
12 7525556224
13 76768604656
14 831846342656
15 9541952653184
16 115516079079424
17 1471865234248336
18 19689636672045056
19 275914012819601504