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A178417 as a simple table

n a(n)
1 1
2 1
3 1
4 4
5 -3
6 19
7 -67
8 40
9 -1243
10 -4299
11 -25627
12 -334324
13 627929
14 -29742841
15 372632409
16 -1946165680
17 128948361769
18 1488182579081
19 52394610324649
20 2333568937567764
21 -5642424912729707
22 3857844273728205019

[1,1,1,4,-3,19,-67,40,-1243,-4299,-25627,-334324,
 627929,-29742841,372632409,-1946165680,
 128948361769,1488182579081,52394610324649,
 2333568937567764,-5642424912729707,
 3857844273728205019]

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Last modified December 1 21:42 EST 2020. Contains 338858 sequences. (Running on oeis4.)