# A017620 (b-file synthesized from sequence entry)
0 4096
1 160000
2 1048576
3 3748096
4 9834496
5 21381376
6 40960000
7 71639296
8 116985856
9 181063936
10 268435456
11 384160000
12 533794816
13 723394816
14 959512576
15 1249198336
16 1600000000
17 2019963136
18 2517630976