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A249248 as a triangular array

1
13
173
112223
11869403
125159241613
133310883582853
1425432465339311551123
152882579813805978620321423
16313541211044253575212336832941753
1751989

A249248 as a square array

11111111111
371218253342526375
3226915931054388213541989
3402418832465579812110
36158233931380544253
3851155978657521
3112203223368
31423294
3175
3
11111111111
371218253342526375
3226915931054388213541989
3402418832465579812110
36158233931380544253
3851155978657521
3112203223368
31423294
3175
3