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A000023 as a simple table

na(n)
01
1-1
22
3-2
48
58
6112
7656
85504
949024
10491264
115401856
1264826368
13842734592
1411798300672
15176974477312
162831591702528
1748137058811904
18866467058876416
1916462874118127616
20329257482363600896
216914407129633521664
22152116956851941670912

[1,-1,2,-2,8,8,112,656,5504,49024,491264,5401856,
 64826368,842734592,11798300672,176974477312,
 2831591702528,48137058811904,866467058876416,
 16462874118127616,329257482363600896,
 6914407129633521664,152116956851941670912]