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A013216 as a simple table

n a(n)
0 0
1 0
2 -1
3 3
4 -6
5 23
6 -105
7 406
8 -1260
9 1385
10 48195
11 -816794
12 7746354
13 -28590343
14 -859023165
15 32103094024
16 -771444393720
17 15805494180377
18 -295855009807833
19 5153505812257222
20 -82415471899841090

[0,0,-1,3,-6,23,-105,406,-1260,1385,48195,-816794,
 7746354,-28590343,-859023165,32103094024,
 -771444393720,15805494180377,-295855009807833,
 5153505812257222,-82415471899841090]

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Last modified June 15 06:51 EDT 2024. Contains 373402 sequences. (Running on oeis4.)