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A253871 as a triangular array

512
33283328
204803163220480
119040288000296960119040
679936254643239398402589968679936
3825920222016005239449650414592227297283825920
214261761921594086779822081052857184659280384

A253871 as a square array

512332820480119040679936382592021426176
332831632288000254643222201600192159408
20480296960393984052394496677982208
1190402589968504145921052857184
67993622729728659280384
3825920

A253871 as an upper right triangle

512332820480119040679936382592021426176
332831632288000254643222201600192159408
20480296960393984052394496677982208
1190402589968504145921052857184
67993622729728659280384
3825920

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Last modified August 11 03:41 EDT 2022. Contains 356046 sequences. (Running on oeis4.)