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A302978 as a simple table

n a(n)
1 1
2 2
3 -1
4 0
5 1
6 5
7 28
8 182
9 1350
10 11274
11 104856
12 1076064
13 12086760
14 147561000
15 1946180160
16 27582811920
17 418131670320
18 6751768862160
19 115707685968000
20 2097617321963520
21 40108223054148480
22 806736096940072320
23 17028466642305216000
24 376369075678811040000

[1,2,-1,0,1,5,28,182,1350,11274,104856,1076064,
 12086760,147561000,1946180160,27582811920,
 418131670320,6751768862160,115707685968000,
 2097617321963520,40108223054148480,
 806736096940072320,17028466642305216000,
 376369075678811040000]

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Last modified September 8 17:50 EDT 2024. Contains 375753 sequences. (Running on oeis4.)