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A009597 as a simple table

n a(n)
0 0
1 1
2 -1
3 4
4 -18
5 106
6 -750
7 6196
8 -58408
9 617716
10 -7234020
11 92842696
12 -1294948776
13 19493497024
14 -314874396928
15 5430592728016
16 -99578626460160
17 1934092698170896
18 -39660351268817808
19 856128235903319296

[0,1,-1,4,-18,106,-750,6196,-58408,617716,
 -7234020,92842696,-1294948776,19493497024,
 -314874396928,5430592728016,-99578626460160,
 1934092698170896,-39660351268817808,
 856128235903319296]

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Last modified June 20 22:36 EDT 2024. Contains 373532 sequences. (Running on oeis4.)