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A109978 as a triangular array

1
11
-111
2-221
-55-451
13-1411-7121
-3340-3520-5271
80-111113-772134581
-184293-350294-144-272381211
402-7311021-1042716-249-15310632481
-8401726-27963409-29821755-72431840375031

A109978 as a square array

11-12-513-3380-184402-840
11-25-1440-111293-7311726
12-411-35113-3501021-2796
15-720-77294-10423409
112-521-144716-2982
12734-27-2491755
158238-153-724
11211063318
12484037
1503
1

A109978 as an upper right triangle

11-12-513-3380-184402-840
11-25-1440-111293-7311726
12-411-35113-3501021-2796
15-720-77294-10423409
112-521-144716-2982
12734-27-2491755
158238-153-724
11211063318
12484037
1503
1

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Last modified August 9 20:09 EDT 2020. Contains 336326 sequences. (Running on oeis4.)