# A054778 (b-file synthesized from sequence entry)
0 0
1 120
2 30240
3 360360
4 1860480
5 6375600
6 17100720
7 38955840
8 78960960
9 146611080
10 254251200
11 417451320
12 655381440
13 991186560
14 1452361680
15 2071126800
16 2884801920
17 3936182040
18 5273912160
19 6952862280
20 9034502400
21 11587277520
22 14686982640
23 18417137760