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A176420 as a triangular array

1
11
121
1551
11230121
127146146271
1586371376637581
11212647117771177726471211
1248107689710020071897100107682481
15034340078795233096223309622787952434005031
1

A176420 as a square array

11111111111
125122758121248503
153014663726471076843400
11214613761177797100787952
127637117772007183309622
1582647971003309622
112110768787952
124843400
1503
1

A176420 as an upper right triangle

11111111111
125122758121248503
153014663726471076843400
11214613761177797100787952
127637117772007183309622
1582647971003309622
112110768787952
124843400
1503
1

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Last modified May 20 14:08 EDT 2024. Contains 372717 sequences. (Running on oeis4.)