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A278120 as a simple table

n a(n)
0 -1
1 1
2 5
3 25
4 1033
5 15745
6 1599895
7 12116675
8 1519810267
9 5730215335
10 2762191322225
11 155865304045375
12 275016025098532093
13 129172331662700995
14 358829725148742321475
15 524011363178245785875
16 10072731258491333905209253
17 1181576300858987307102335
18 68622390512340213600239902775

[-1,1,5,25,1033,15745,1599895,12116675,1519810267,
 5730215335,2762191322225,155865304045375,
 275016025098532093,129172331662700995,
 358829725148742321475,524011363178245785875,
 10072731258491333905209253,
 1181576300858987307102335,
 68622390512340213600239902775]

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Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)