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A232015 as a simple table

n a(n)
0 1
1 -1
2 5
3 -1
4 29
5 23
6 197
7 335
8 1517
9 3527
10 12629
11 33791
12 109565
13 312311
14 969701
15 2843567
16 8661773
17 25723175
18 77693813
19 232032863
20 698195741
21 2090392919
22 6279567365
23 18821924879
24 56499329069
25 169430878343
26 508426852757
27 1525012122815
28 4575573239357

[1,-1,5,-1,29,23,197,335,1517,3527,12629,33791,
 109565,312311,969701,2843567,8661773,25723175,
 77693813,232032863,698195741,2090392919,
 6279567365,18821924879,56499329069,169430878343,
 508426852757,1525012122815,4575573239357]

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Last modified October 18 18:56 EDT 2019. Contains 328197 sequences. (Running on oeis4.)