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A074426 as a simple table

n a(n)
1 0
2 0
3 0
4 2
5 36
6 236
7 1296
8 6792
9 34272
10 169987
11 883872
12 4861056
13 27433728
14 155270016
15 876311654
16 4933761408
17 27770211072
18 156752186112
19 889181991936
20 5068337188146
21 28990266218496
22 166191833516125
23 954240788994048
24 5486884531697664
25 31596861676172076

[0,0,0,2,36,236,1296,6792,34272,169987,883872,
 4861056,27433728,155270016,876311654,4933761408,
 27770211072,156752186112,889181991936,
 5068337188146,28990266218496,166191833516125,
 954240788994048,5486884531697664,
 31596861676172076]

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Last modified September 1 06:23 EDT 2024. Contains 375575 sequences. (Running on oeis4.)