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A174718 as a triangular array

1
11
1-21
1-13-131
1-44-74-441
1-123-278-278-1231
1-314-881-1196-881-3141
1-761-2539-4317-4317-2539-7611
1-1784-6884-14024-17594-14024-6884-17841
1-4087-17884-42412-63874-63874-42412-17884-40871

A174718 as a square array

1111111111
1-2-13-44-123-314-761-1784-4087
1-13-74-278-881-2539-6884-17884
1-44-278-1196-4317-14024-42412
1-123-881-4317-17594-63874
1-314-2539-14024-63874
1-761-6884-42412
1-1784-17884
1-4087
1
1111111111
1-2-13-44-123-314-761-1784-4087
1-13-74-278-881-2539-6884-17884
1-44-278-1196-4317-14024-42412
1-123-881-4317-17594-63874
1-314-2539-14024-63874
1-761-6884-42412
1-1784-17884
1-4087
1