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A174728 as a triangular array

1
11
1-81
1-69-691
1-374-974-3741
1-1735-9330-9330-17351
1-7496-74969-152144-74969-74961
1-31241-545083-1983485-1983485-545083-312411
1-127754-3724784-22499414-39828194-22499414-3724784-1277541

A174728 as a square array

111111111
1-8-69-374-1735-7496-31241-127754
1-69-974-9330-74969-545083-3724784
1-374-9330-152144-1983485-22499414
1-1735-74969-1983485-39828194
1-7496-545083-22499414
1-31241-3724784
1-127754
1
111111111
1-8-69-374-1735-7496-31241-127754
1-69-974-9330-74969-545083-3724784
1-374-9330-152144-1983485-22499414
1-1735-74969-1983485-39828194
1-7496-545083-22499414
1-31241-3724784
1-127754
1