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A251791 as a triangular array

1280
16641664
307226403072
6144647064706144
1183414908167101490811834
226323594844504445043594822632
44792858261302021493641302028582644792
86988210582362242541656541656362242

A251791 as a square array

128016643072614411834226324479286988
166426406470149083594885826210582
307264701671044504130202362242
61441490844504149364541656
1183435948130202541656
2263285826362242
44792

A251791 as an upper right triangle

128016643072614411834226324479286988
166426406470149083594885826210582
307264701671044504130202362242
61441490844504149364541656
1183435948130202541656
2263285826362242
44792

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Last modified December 2 13:15 EST 2021. Contains 349444 sequences. (Running on oeis4.)