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A050310 as a triangular array

1
-71
21-71
-714-71
-771414-71
77-63714-71
105-7-42714-71
-71987-49714-71
-9062728-49714-71
-97-1121042121-49714-71
49-118-21134221-49714-71
11171

A050310 as a square array

1-721-7-7777105-71-90-9749111
1-71414-63-79862-112-11871
1-7147-4277104-21
1-7147-49282113
1-7147-492142
1-7147-4921
1-7147-49
1-7147
1-714
1-7
1
1-721-7-7777105-71-90-9749111
1-71414-63-79862-112-11871
1-7147-4277104-21
1-7147-49282113
1-7147-492142
1-7147-4921
1-7147-49
1-7147
1-714
1-7
1