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A234019 as a simple table

n a(n)
1 0
2 -1
3 0
4 1
5 2
6 4
7 6
8 19
9 38
10 67
11 127
12 234
13 419
14 745
15 1378
16 2678
17 5311
18 10470
19 20333 

[0,-1,0,1,2,4,6,19,38,67,127,234,419,745,1378,
 2678,5311,10470,20333]

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Last modified July 14 16:15 EDT 2024. Contains 374322 sequences. (Running on oeis4.)