# A025970 (b-file synthesized from sequence entry)
0 1
1 24
2 388
3 5376
4 69328
5 862848
6 10547776
7 127767552
8 1540506880
9 18530383872
10 222632510464
11 2673205936128
12 32088199647232
13 385116900458496
14 4621754370506752
15 55463163983560704
16 665570645617475584