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A012319 as a simple table

n a(n)
0 0
1 1
2 2
3 2
4 -16
5 -152
6 -640
7 3208
8 93760
9 903232
10 -434432
11 -177422848
12 -3216258560
13 -16228512640
14 694840763136
15 22720594160384
16 271707063115776
17 -4070997323902976
18 -272647179903516672

[0,1,2,2,-16,-152,-640,3208,93760,903232,-434432,
 -177422848,-3216258560,-16228512640,694840763136,
 22720594160384,271707063115776,-4070997323902976,
 -272647179903516672]

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Last modified May 10 11:28 EDT 2024. Contains 372387 sequences. (Running on oeis4.)