# A152263 (b-file synthesized from sequence entry)
0 1
1 8
2 70
3 656
4 6436
5 64928
6 665560
7 6883136
8 71527696
9 745221248
10 7774933600
11 81176105216
12 847871534656
13 8857730451968
14 92547138221440
15 967005845328896
16 10104359508418816
17 105583413105625088
18 1103281758201710080