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A077919 as a simple table

n a(n)
0 1
1 -1
2 5
3 -13
4 39
5 -113
6 331
7 -965
8 2819
9 -8229
10 24027
11 -70149
12 204811
13 -597973
14 1745867
15 -5097301
16 14882283
17 -43450901
18 126860971
19 -370388309
20 1081400363
21 -3157299285
22 9218175915
23 -26913751125
24 78578452651
25 -229420759381
26 669825926315
27 -1955650276693
28 5709793924779

[1,-1,5,-13,39,-113,331,-965,2819,-8229,24027,
 -70149,204811,-597973,1745867,-5097301,14882283,
 -43450901,126860971,-370388309,1081400363,
 -3157299285,9218175915,-26913751125,78578452651,
 -229420759381,669825926315,-1955650276693,
 5709793924779]

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Last modified October 4 21:22 EDT 2022. Contains 357240 sequences. (Running on oeis4.)