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A019122 as a simple table

n a(n)
3 0
4 0
5 4
6 4
7 8
8 30
9 50
10 99
11 270
12 665
13 1390
14 3282
15 8729
16 20828
17 50354
18 132935
19 340395
20 867459
21 2283763
22 6011749
23 15775606
24 41785059
25 111035569
26 294868281
27 784753491
28 2093244706
29 5586723163
30 14924112433
31 39928991846

[0,0,4,4,8,30,50,99,270,665,1390,3282,8729,20828,
 50354,132935,340395,867459,2283763,6011749,
 15775606,41785059,111035569,294868281,784753491,
 2093244706,5586723163,14924112433,39928991846]

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Last modified April 25 16:23 EDT 2024. Contains 371989 sequences. (Running on oeis4.)