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A303189 as a simple table

n a(n)
0 1
1 -1
2 -1
3 5
4 7
5 21
6 -94
7 -117
8 -404
9 -840
10 3541
11 4536
12 14412
13 31313
14 72175
15 -249424
16 -262828
17 -930639
18 -1895460
19 -4441316
20 -8085972
21 24112570
22 26214408
23 87131883
24 180197979
25 411759028
26 748154122
27 1525043990
28 -3554837744
29 -3210408245
30 -11955482059
31 -23817949142
32 -55221348072

[1,-1,-1,5,7,21,-94,-117,-404,-840,3541,4536,
 14412,31313,72175,-249424,-262828,-930639,
 -1895460,-4441316,-8085972,24112570,26214408,
 87131883,180197979,411759028,748154122,1525043990,
 -3554837744,-3210408245,-11955482059,-23817949142,
 -55221348072]

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Last modified July 19 18:18 EDT 2024. Contains 374410 sequences. (Running on oeis4.)