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A009270 as a simple table

n a(n)
0 1
1 2
2 0
3 -98
4 1400
5 10442
6 -2400420
7 182874382
8 -11026390960
9 272975496722
10 101146071584580
11 -35170244758056938
12 8878370234261147000
13 -2024456851681157735398
14 406854219864771946133100

[1,2,0,-98,1400,10442,-2400420,182874382,
 -11026390960,272975496722,101146071584580,
 -35170244758056938,8878370234261147000,
 -2024456851681157735398,406854219864771946133100]

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Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)