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A013973 as a simple table

n a(n)
0 1
1 -504
2 -16632
3 -122976
4 -532728
5 -1575504
6 -4058208
7 -8471232
8 -17047800
9 -29883672
10 -51991632
11 -81170208
12 -129985632
13 -187132176
14 -279550656
15 -384422976
16 -545530104
17 -715608432
18 -986161176
19 -1247954400
20 -1665307728
21 -2066980608
22 -2678616864
23 -3243917376
24 -4159663200

[1,-504,-16632,-122976,-532728,-1575504,-4058208,
 -8471232,-17047800,-29883672,-51991632,-81170208,
 -129985632,-187132176,-279550656,-384422976,
 -545530104,-715608432,-986161176,-1247954400,
 -1665307728,-2066980608,-2678616864,-3243917376,
 -4159663200]

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)