A168933 - OEIS

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A168933 as a simple table

n	a(n)
0	1
1	16
2	240
3	3600
4	54000
5	810000
6	12150000
7	182250000
8	2733750000
9	41006250000
10	615093750000
11	9226406250000
12	138396093750000
13	2075941406250000
14	31139121093750000
15	467086816406250000
16	7006302246093750000

[1,16,240,3600,54000,810000,12150000,182250000, 2733750000,41006250000,615093750000,9226406250000, 138396093750000,2075941406250000, 31139121093750000,467086816406250000, 7006302246093750000]