# A381274 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 28
4 109
5 676
6 10261
7 65584
8 881497
9 11930896
10 122708521
11 2186539840
12 30542901445
13 477545743936
14 9168255077437
15 149358238356736
16 3043023842477233
17 61000460650291456
18 1225825910880514129
19 28395625697194028032
20 621110654837608378141
21 14936817377079335166976