# A077555 (b-file synthesized from sequence entry)
0 4
1 24
2 216
3 2160
4 32400
5 810000
6 9525600
7 238140000
8 8334900000
9 408410100000
10 6051137400000
11 296505732600000
12 16307815293000000
13 1255701777561000000
14 151939915084881000000
15 1074848105961630000000
16 82763304159045510000000