# A028523 (b-file synthesized from sequence entry)
0 1
1 0
2 266
3 3136
4 21035
5 108416
6 468846
7 1777472
8 6094557
9 19300736
10 57245902
11 160628608
12 429755858
13 1103180288
14 2730448664
15 6542017216
16 15223697440
17 34504423296
18 76349075502
19 165267238528
20 350579755239
21 729912895104
22 1493567972036
23 3007226905088
24 5964243944078