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A112708 as a simple table

na(n)
01
12
22
33
44
5-7
668
7-285
8553
98052
10-142982
111505079
12-11345907
1338452956
14672559916
15-18995038455
16301298528898
17-3473588012773
1823630888402370
19167786255489085
20-10244305495490866
21242112502660674867
22-4105880426369854764
2348839647963108358039

[1,2,2,3,4,-7,68,-285,553,8052,-142982,1505079,
 -11345907,38452956,672559916,-18995038455,
 301298528898,-3473588012773,23630888402370,
 167786255489085,-10244305495490866,
 242112502660674867,-4105880426369854764,
 48839647963108358039]