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A074423 as a simple table

n a(n)
1 0
2 0
3 0
4 8
5 60
6 236
7 1008
8 5280
9 30240
10 169987
11 940896
12 5174688
13 28304640
14 155270016
15 862725426
16 4857268896
17 27554100480
18 156752186112
19 892662156288
20 5088174124950
21 29046943180800
22 166191833516125
23 953309368018944
24 5481528861090816
25 31581437286776820

[0,0,0,8,60,236,1008,5280,30240,169987,940896,
 5174688,28304640,155270016,862725426,4857268896,
 27554100480,156752186112,892662156288,
 5088174124950,29046943180800,166191833516125,
 953309368018944,5481528861090816,
 31581437286776820]

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Last modified July 5 17:24 EDT 2024. Contains 374027 sequences. (Running on oeis4.)