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A254907 as a triangular array

512
24232423
757959397579
22901141371344422901
7224940492243583638772249
219706109250506975408181620219706
616608258031861769073059885146168616608
16561475763261388191312046726656618

A254907 as a square array

5122423757922901722492197066166081656147
242359391413740492109250258031576326
757913444243585069786176138819
22901363875408190730131204
72249816205988567266
21970614616856618
616608
5122423757922901722492197066166081656147
242359391413740492109250258031576326
757913444243585069786176138819
22901363875408190730131204
72249816205988567266
21970614616856618
616608