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A038253 as a triangular array

1
511
25110121
12582518151331
6255500181502662014641
312534375151250332750366025161051
1562520625011343753327500549037548315301771561
78125120312579406252911562564054375

A038253 as a square array

152512562531251562578125
111108255500343752062501203125
12118151815015125011343757940625
133126620332750332750029115625
14641366025549037564054375
1610514831530
1771561
152512562531251562578125
111108255500343752062501203125
12118151815015125011343757940625
133126620332750332750029115625
14641366025549037564054375
1610514831530
1771561