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A160956 as a simple table

na(n)
1511
2130305
31676080
416679040
549902216
6427400400
7490968800
82134917120
93665586960
1012725065080
1110953738768
1254707251200
1334736533160
14125197044000
15163679268480
16273269391360
17222788253240
18934724674800
19482144484080
201628808330240
211610377664000

[511,130305,1676080,16679040,49902216,427400400,
 490968800,2134917120,3665586960,12725065080,
 10953738768,54707251200,34736533160,125197044000,
 163679268480,273269391360,222788253240,
 934724674800,482144484080,1628808330240,
 1610377664000]