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A108561 as a triangular array

1
1-1
101
111-1
12201
13421-1
1476301
151113931-1
1616242212401
17224046341641-1
18296286805020501
193791148166130702551-1
110461282393142962009530601
11156174367

A108561 as a square array

11111111111111
-101234567891011
1124711162229374656
-10261324406291128174
1139224686148239367
-103123480166314
1141650130296
-1042070200
1152595
-10530
116
-10
1

A108561 as an upper right triangle

11111111111111
-101234567891011
1124711162229374656
-10261324406291128174
1139224686148239367
-103123480166314
1141650130296
-1042070200
1152595
-10530
116
-10
1

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Last modified June 20 17:27 EDT 2019. Contains 324234 sequences. (Running on oeis4.)