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A349038 as a simple table

na(n)
01
11
2-3
3-31
4453
515641
6-973443
7-126707471
832192101173
916547934365321
10-16912274385623763
11-34670312866958030751
12141940412456349939507813
131163060052394732038435530361
14-19053251054424307861590927924003
15-624375047526738670923288994646642991

[1,1,-3,-31,453,15641,-973443,-126707471,
 32192101173,16547934365321,-16912274385623763,
 -34670312866958030751,141940412456349939507813,
 1163060052394732038435530361,
 -19053251054424307861590927924003,
 -624375047526738670923288994646642991]