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A009311 as a simple table

n a(n)
0 0
1 1
2 -2
3 5
4 -19
5 104
6 -706
7 5662
8 -53082
9 570600
10 -6897016
11 92565296
12 -1366706848
13 22016867248
14 -384226243584
15 7220865546000
16 -145397565641296
17 3122890640031488
18 -71266398589322368
19 1722010388581604224

[0,1,-2,5,-19,104,-706,5662,-53082,570600,
 -6897016,92565296,-1366706848,22016867248,
 -384226243584,7220865546000,-145397565641296,
 3122890640031488,-71266398589322368,
 1722010388581604224]

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Last modified April 19 14:10 EDT 2024. Contains 371792 sequences. (Running on oeis4.)