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A009760 as a simple table

n a(n)
0 0
1 1
2 0
3 -1
4 12
5 -34
6 120
7 146
8 -2352
9 23848
10 -53280
11 -371768
12 12223200
13 -107535440
14 706340544
15 2599870352
16 -95898673920
17 1486560431744
18 -8308014488064
19 -67260673442176
20 3505513923832320
21 -54539552924497664
22 499029405102412800

[0,1,0,-1,12,-34,120,146,-2352,23848,-53280,
 -371768,12223200,-107535440,706340544,2599870352,
 -95898673920,1486560431744,-8308014488064,
 -67260673442176,3505513923832320,
 -54539552924497664,499029405102412800]

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Last modified March 29 03:51 EDT 2024. Contains 371264 sequences. (Running on oeis4.)