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A360915 as a triangular array

4
44
484
410104
41212124
4141414144
416161616164
41820181820184
4202224202422204
422242628282624224
42428283032302828244
4263032323636323230264

A360915 as a square array

444444444444
48101214161820222426
4101214162022242830
41214161824262832
414161820283032
4162024283236
41822263036
420242832
4222832
42430
426
4
444444444444
48101214161820222426
4101214162022242830
41214161824262832
414161820283032
4162024283236
41822263036
420242832
4222832
42430
426
4