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A101851 as a simple table

n a(n)
0 0
1 1
2 1
3 -2
4 -1
5 11
6 -18
7 -41
8 317
9 -680
10 -1767
11 19911
12 -68264
13 -59643
14 2076973
15 -11905466
16 18577387
17 269836343
18 -2819431570
19 12357816867
20 17355428041
21 -752675321800
22 6318046208653
23 -21416130683133
24 -152569023028272
25 3016508107668601
26 -23667435182395287

[0,1,1,-2,-1,11,-18,-41,317,-680,-1767,19911,
 -68264,-59643,2076973,-11905466,18577387,
 269836343,-2819431570,12357816867,17355428041,
 -752675321800,6318046208653,-21416130683133,
 -152569023028272,3016508107668601,
 -23667435182395287]

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Last modified February 25 08:21 EST 2020. Contains 332221 sequences. (Running on oeis4.)