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A174949 as a triangular array

1
11
151
1-11-111
1-99-119-991
1-451-611-611-4511
1-1783-2561-2763-2561-17831
1-6787-10007-11211-11211-10007-67871
1-25651-38231-43627-45071-43627-38231-256511

A174949 as a square array

111111111
15-11-99-451-1783-6787-25651
1-11-119-611-2561-10007-38231
1-99-611-2763-11211-43627
1-451-2561-11211-45071
1-1783-10007-43627
1-6787-38231
1-25651
1
111111111
15-11-99-451-1783-6787-25651
1-11-119-611-2561-10007-38231
1-99-611-2763-11211-43627
1-451-2561-11211-45071
1-1783-10007-43627
1-6787-38231
1-25651
1