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A157819 as a simple table

n a(n)
0 1
1 -3
2 23
3 -15
4 247
5 5
6 473
7 -455
8 607
9 12429
10 -1235
11 -555775
12 1479997
13 35135893
14 -57169
15 -2990414775
16 118534559
17 329655706397
18 -5749662829
19 -45692713833455
20 91546290557
21 7777794952987941
22 -1792042786391
23 -1595024111042171815
24 1982765468442277

[1,-3,23,-15,247,5,473,-455,607,12429,-1235,
 -555775,1479997,35135893,-57169,-2990414775,
 118534559,329655706397,-5749662829,
 -45692713833455,91546290557,7777794952987941,
 -1792042786391,-1595024111042171815,
 1982765468442277]

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Last modified July 1 21:56 EDT 2022. Contains 354975 sequences. (Running on oeis4.)