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A203991 as a triangular array

2
-17
-10138
-7128-1281
-610357-6012634
-63294620-1253110-129919
-7753065613-233483514-1821399342
-10982711036044-44234990800-8442280-16125265

A203991 as a square array

2-1-10-71-610-6329-77530-1098271
71283574620656131036044
38-1-60-1253-23348-442349
2811110351490800
2634-1-182-8442
299191280
399342-1
6125265
2-1-10-71-610-6329-77530-1098271
71283574620656131036044
38-1-60-1253-23348-442349
2811110351490800
2634-1-182-8442
299191280
399342-1
6125265