A305507 - OEIS

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A305507 as a simple table

n	a(n)
1	0
2	209
3	464
4	10182
5	101912
6	1126154
7	13419832
8	155294889
9	1779735908
10	20787421456
11	240404798165
12	2785733460032
13	32316684221838
14	374520718369338
15	4341656074660714
16	50335182498171381
17	583493054961493312

[0,209,464,10182,101912,1126154,13419832, 155294889,1779735908,20787421456,240404798165, 2785733460032,32316684221838,374520718369338, 4341656074660714,50335182498171381, 583493054961493312]