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A265941 as a simple table

n a(n)
1 1
2 -1
3 1
4 -3
5 5
6 -11
7 27
8 -69
9 187
10 -517
11 1461
12 -4163
13 11947
14 -34521
15 100261
16 -292835
17 859927
18 -2538141
19 7527545
20 -22422647
21 67055871
22 -201247141
23 605915529
24 -1829583727
25 5539081021
26 -16810214491
27 51130177087
28 -155839985097
29 475899781565
30 -1455898774263
31 4461443964939
32 -13693120761789
33 42089169290257
34 -129551061180907
35 399281615409427

[1,-1,1,-3,5,-11,27,-69,187,-517,1461,-4163,11947,
 -34521,100261,-292835,859927,-2538141,7527545,
 -22422647,67055871,-201247141,605915529,
 -1829583727,5539081021,-16810214491,51130177087,
 -155839985097,475899781565,-1455898774263,
 4461443964939,-13693120761789,42089169290257,
 -129551061180907,399281615409427]

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Last modified May 1 09:02 EDT 2024. Contains 372163 sequences. (Running on oeis4.)