# A015163 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 136
4 1326
5 8160
6 31552
7 88128
8 240618
9 658784
10 1452480
11 2622216
12 5030028
13 10390944
14 18128256
15 26822464
16 43527174
17 77769696
18 119299200
19 157895592
20 232127928
21 379052672
22 537564480
23 662425536
24 910537442
25 1402281312
26 1881950592
27 2201578336
28 2894860164
29 4268628192
30 5501926784