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A246138 as a simple table

n a(n)
1 -1
2 0
3 1
4 3
5 9
6 32
7 135
8 648
9 3409
10 19176
11 113535
12 700125
13 4463415
14 29256120
15 196334697
16 1344542787
17 9371335905
18 66335058128
19 476022873279
20 3457886816997
21 25394948961831
22 188353304179920
23 1409578821465129
24 10635308054118792
25 80845157085234975

[-1,0,1,3,9,32,135,648,3409,19176,113535,700125,
 4463415,29256120,196334697,1344542787,9371335905,
 66335058128,476022873279,3457886816997,
 25394948961831,188353304179920,1409578821465129,
 10635308054118792,80845157085234975]

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Last modified September 4 09:40 EDT 2024. Contains 375681 sequences. (Running on oeis4.)