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A142722 as a simple table

na(n)
01
11
2-2
311
4-79
5722
6-8021
7104995
8-1582946
927015077
10-514869409
1110839272666
12-249818140727
136256292790841
14-169169723493434
154912178274100427
16-152446696220606671
175035653153554120570
18-176400307070614826621
196531847014766302705547

[1,1,-2,11,-79,722,-8021,104995,-1582946,27015077,
 -514869409,10839272666,-249818140727,
 6256292790841,-169169723493434,4912178274100427,
 -152446696220606671,5035653153554120570,
 -176400307070614826621,6531847014766302705547]