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A258300 as a simple table

n a(n)
0 1
1 1
2 1
3 1
4 5
5 30
6 282
7 3539
8 55974
9 1065947
10 23785645
11 608889106
12 17594781914
13 566603884871
14 20123663539549
15 781500841147604
16 32946304088342094
17 1498526109256063585
18 73147202427442412812
19 3814178439827570160925
20 211598573411998923138880

[1,1,1,1,5,30,282,3539,55974,1065947,23785645,
 608889106,17594781914,566603884871,20123663539549,
 781500841147604,32946304088342094,
 1498526109256063585,73147202427442412812,
 3814178439827570160925,211598573411998923138880]

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Last modified May 26 00:47 EDT 2022. Contains 354073 sequences. (Running on oeis4.)