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A009574 as a simple table

n a(n)
0 0
1 1
2 1
3 3
4 -2
5 25
6 -129
7 931
8 -7412
9 66753
10 -667475
11 7342291
12 -88107414
13 1145396473
14 -16035550517
15 240533257875
16 -3848532125864
17 65425046139841
18 -1177650830516967
19 22375365779822563
20 -447507315596451050
21 9397653627525472281
22 -206748379805560389929

[0,1,1,3,-2,25,-129,931,-7412,66753,-667475,
 7342291,-88107414,1145396473,-16035550517,
 240533257875,-3848532125864,65425046139841,
 -1177650830516967,22375365779822563,
 -447507315596451050,9397653627525472281,
 -206748379805560389929]

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Last modified August 19 17:46 EDT 2024. Contains 375310 sequences. (Running on oeis4.)