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A171804 as a simple table

n a(n)
0 1
1 1
2 5
3 33
4 252
5 2090
6 18299
7 166450
8 1557595
9 14898228
10 145003996
11 1431487820
12 14299208690
13 144262270360
14 1467857359738
15 15045486643137
16 155208575698230
17 1610201799670560
18 16788969497000365
19 175838914655128068

[1,1,5,33,252,2090,18299,166450,1557595,14898228,
 145003996,1431487820,14299208690,144262270360,
 1467857359738,15045486643137,155208575698230,
 1610201799670560,16788969497000365,
 175838914655128068]

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Last modified May 10 19:06 EDT 2024. Contains 372388 sequences. (Running on oeis4.)