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A077918 as a simple table

n a(n)
0 1
1 -1
2 5
3 -12
4 36
5 -100
6 285
7 -805
8 2281
9 -6456
10 18280
11 -51752
12 146521
13 -414825
14 1174445
15 -3325060
16 9413836
17 -26652236
18 75457205
19 -213632717
20 604832081
21 -1712386800
22 4848070480
23 -13725746640
24 38860021041
25 -110019605841
26 311485000405
27 -881869233532
28 2496728073716
29 -7068679614900

[1,-1,5,-12,36,-100,285,-805,2281,-6456,18280,
 -51752,146521,-414825,1174445,-3325060,9413836,
 -26652236,75457205,-213632717,604832081,
 -1712386800,4848070480,-13725746640,38860021041,
 -110019605841,311485000405,-881869233532,
 2496728073716,-7068679614900]

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Last modified October 6 04:36 EDT 2022. Contains 357261 sequences. (Running on oeis4.)