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A250956 as a triangular array

15
5656
209392209
78027442744780
29111920836016192082911
1086413445647271247271213445610864
40545941192620434411633448620434494119240545
151316658834481431944286298344286298344

A250956 as a square array

155620978029111086440545151316
563922744192081344569411926588344
209274436016472712620434481431944
7801920847271211633448286298344
29111344566204344286298344
10864941192
40545
155620978029111086440545151316
563922744192081344569411926588344
209274436016472712620434481431944
7801920847271211633448286298344
29111344566204344286298344
10864941192
40545