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A007315 as a simple table

n a(n)
1 1
2 -1
3 1
4 -1
5 0
6 4
7 -16
8 46
9 -111
10 228
11 -379
12 389
13 393
14 -3810
15 14169
16 -39735
17 91861
18 -172623
19 225378
20 10246
21 -1347935
22 5843671
23 -17779693
24 43942706
25 -89033228
26 133666868
27 -64088688
28 -508956437
29 2636138606
30 -8664888857
31 22760994036
32 -49429259575

[1,-1,1,-1,0,4,-16,46,-111,228,-379,389,393,-3810,
 14169,-39735,91861,-172623,225378,10246,-1347935,
 5843671,-17779693,43942706,-89033228,133666868,
 -64088688,-508956437,2636138606,-8664888857,
 22760994036,-49429259575]

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Last modified August 14 07:59 EDT 2020. Contains 336477 sequences. (Running on oeis4.)