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A278072 as a triangular array

1
-11
111
-1431
1101151
-132372271
1100128883791
-132944434117156111
111011558129773929479131
-137615514489130691406465106151
11303519680183651243563462442692137171

A278072 as a square array

1-11-11-11-11-11
11410321003291101376113035
1311371284441558551419680
1522883411297489118365
1737171739306912435
195629414066346
111794652442
113106692
115137
117
1
1-11-11-11-11-11
11410321003291101376113035
1311371284441558551419680
1522883411297489118365
1737171739306912435
195629414066346
111794652442
113106692
115137
117
1