# A076128 (b-file synthesized from sequence entry)
1 0
2 -1
3 0
4 14
5 105
6 699
7 5012
8 40284
9 362835
10 3628745
11 39916734
12 479001522
13 6227020709
14 87178291095
15 1307674367880
16 20922789887864
17 355687428095847
18 6402373705727829
19 121645100408831810
20 2432902008176639790