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A295834 as a simple table

n a(n)
0 1
1 1
2 -1
3 -1
4 11
5 19
6 -311
7 -1919
8 20201
9 154169
10 -1363249
11 -14236289
12 140759299
13 1213688059
14 -33239720359
15 -257577468511
16 11707385639249
17 119005356808561
18 -3416942071608929
19 -43117983466829441
20 893917358612502011
21 13133282766425234531
22 -411010168576899605911
23 -7970128344774479644991

[1,1,-1,-1,11,19,-311,-1919,20201,154169,-1363249,
 -14236289,140759299,1213688059,-33239720359,
 -257577468511,11707385639249,119005356808561,
 -3416942071608929,-43117983466829441,
 893917358612502011,13133282766425234531,
 -411010168576899605911,-7970128344774479644991]

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Last modified January 26 23:05 EST 2020. Contains 331289 sequences. (Running on oeis4.)