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A323875 as a simple table

n a(n)
1 0
2 1
3 3
4 19
5 230
6 5098
7 207536
8 15891372
9 2343580752
10 675458276144
11 383306076989440
12 430041136692146912
13 956431386434331323776
14 4224539434553753578497024
15 37106501188130085159785113344
16 648740172906485727983524271405824
17 22591360806791558877526051411343415296
18 1567817808096346724727108606144936617617408

[0,1,3,19,230,5098,207536,15891372,2343580752,
 675458276144,383306076989440,430041136692146912,
 956431386434331323776,4224539434553753578497024,
 37106501188130085159785113344,
 648740172906485727983524271405824,
 22591360806791558877526051411343415296,
 1567817808096346724727108606144936617617408]

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Last modified April 24 09:18 EDT 2024. Contains 371935 sequences. (Running on oeis4.)