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A260695 as a simple table

n a(n)
0 1
1 1
2 1
3 5
4 8
5 84
6 180
7 3044
8 8064
9 193248
10 604800
11 19056960
12 68428800
13 2699672832
14 10897286400
15 520105017600
16 2324754432000
17 130859579289600
18 640237370572800
19 41680704936960000
20 221172909834240000
21 16397141420298240000
22 93666727314800640000
23 7809290721329061888000
24 47726800133326110720000

[1,1,1,5,8,84,180,3044,8064,193248,604800,
 19056960,68428800,2699672832,10897286400,
 520105017600,2324754432000,130859579289600,
 640237370572800,41680704936960000,
 221172909834240000,16397141420298240000,
 93666727314800640000,7809290721329061888000,
 47726800133326110720000]

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Last modified April 23 22:36 EDT 2024. Contains 371917 sequences. (Running on oeis4.)