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A273955 as a simple table

n a(n)
1 1
2 1
3 -1
4 2
5 -4
6 12
7 -36
8 115
9 -366
10 1202
11 -4016
12 13684
13 -47192
14 164550
15 -578773
16 2051994
17 -7324990
18 26306860
19 -94980720
20 344555898
21 -1255235744
22 4590432218
23 -16845658552
24 62014596756
25 -228956736888
26 847546307549
27 -3145089430938
28 11697191534690
29 -43595085475847
30 162793363083734
31 -609005952973882
32 2282129119421879
33 -8565364253229324
34 32195552437196082
35 -121185775973925826
36 456749227410641398

[1,1,-1,2,-4,12,-36,115,-366,1202,-4016,13684,
 -47192,164550,-578773,2051994,-7324990,26306860,
 -94980720,344555898,-1255235744,4590432218,
 -16845658552,62014596756,-228956736888,
 847546307549,-3145089430938,11697191534690,
 -43595085475847,162793363083734,-609005952973882,
 2282129119421879,-8565364253229324,
 32195552437196082,-121185775973925826,
 456749227410641398]

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Last modified August 14 20:58 EDT 2024. Contains 375167 sequences. (Running on oeis4.)