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A012260 as a simple table

n a(n)
0 1
1 1
2 1
3 1
4 1
5 9
6 49
7 57
8 -447
9 5169
10 78561
11 -93807
12 -5655231
13 31981689
14 1014069393
15 -3857766903
16 -187639949439
17 1058896281825
18 51144433721793
19 -286891166986335
20 -16631972691697791
21 108826313005021545

[1,1,1,1,1,9,49,57,-447,5169,78561,-93807,
 -5655231,31981689,1014069393,-3857766903,
 -187639949439,1058896281825,51144433721793,
 -286891166986335,-16631972691697791,
 108826313005021545]

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Last modified May 22 15:13 EDT 2019. Contains 323480 sequences. (Running on oeis4.)