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A252917 as a triangular array

754
81515125
905125296235674
1012633566649418853258746
113981096175841524730035909451877439
1284281256839611867554413544575983148471413648650
1448958659754814607904486202899378367606913688

A252917 as a square array

7548151905121012633113981091284281251448958659
512552962566649617584168396118754814607
35674418853524730067554413904486202
258746359094554457598899378367
187743931484714606913688
13648650
7548151905121012633113981091284281251448958659
512552962566649617584168396118754814607
35674418853524730067554413904486202
258746359094554457598899378367
187743931484714606913688
13648650