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A292877 as a simple table

na(n)
01
11
25
334
4273
52331
622110
7190450
82540975
9-1071509
101200284739
11-50263360280
123102388877800
13-199436004737160
1414155468007742978
15-1088800915851203694
1690359645776680747647
17-8046100605226675723225
18765244962799789283768523
19-77422876485545489461403294
208303247917673506082303329493
21-940940782152450052071048090369
22112352003582903383388702940258120

[1,1,5,34,273,2331,22110,190450,2540975,-1071509,
 1200284739,-50263360280,3102388877800,
 -199436004737160,14155468007742978,
 -1088800915851203694,90359645776680747647,
 -8046100605226675723225,765244962799789283768523,
 -77422876485545489461403294,
 8303247917673506082303329493,
 -940940782152450052071048090369,
 112352003582903383388702940258120]