# A378691 (b-file synthesized from sequence entry)
0 1
1 1
2 7
3 65
4 699
5 8192
6 101538
7 1309007
8 17373825
9 235820907
10 3258327727
11 45676003435
12 648019627185
13 9286982935406
14 134247731827970
15 1955128344950960
16 28659409029300490
17 422517375650417841
18 6260750426764454787
19 93191618760715641120
20 1392823412892172416996