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A170001 as a simple table

n a(n)
0 1
1 40
2 1560
3 60840
4 2372760
5 92537640
6 3608967960
7 140749750440
8 5489240267160
9 214080370419240
10 8349134446350360
11 325616243407664040
12 12699033492898897560
13 495262306223057004840
14 19315229942699223188760

[1,40,1560,60840,2372760,92537640,3608967960,
 140749750440,5489240267160,214080370419240,
 8349134446350360,325616243407664040,
 12699033492898897560,495262306223057004840,
 19315229942699223188760]

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Last modified September 24 10:57 EDT 2020. Contains 337317 sequences. (Running on oeis4.)