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A151627 as a simple table

n a(n)
1 0
2 0
3 0
4 72
5 27664
6 2864328
7 163809288
8 6727188848
9 225167210712
10 6590156148912
11 175992170793456
12 4407169187423736
13 105396936343707456
14 2437638848729751736
15 55010494951127561400
16 1219075824289276443744
17 26652917330108137129544
18 576864003740129587504224

[0,0,0,72,27664,2864328,163809288,6727188848,
 225167210712,6590156148912,175992170793456,
 4407169187423736,105396936343707456,
 2437638848729751736,55010494951127561400,
 1219075824289276443744,26652917330108137129544,
 576864003740129587504224]

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)