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A290844 as a triangular array

-1
-30
-7-42
-15-18-25
-31-64-2859
-63-210-158-251914
-127-664-748-27194220
-255-2058-3302-1825-317987627
-511-6304-14068-10735-3351-12627212335
-1023-19170-58718-59425-26141-460658056718544

A290844 as a square array

-1-3-7-15-31-63-127-255-511-1023
0-4-18-64-210-664-2058-6304-19170
2-2-28-158-748-3302-14068-58718
55-25-271-1825-10735-59425
9199-317-3351-26141
144298-126-4606
2076272580
27123567
35185
44
-1-3-7-15-31-63-127-255-511-1023
0-4-18-64-210-664-2058-6304-19170
2-2-28-158-748-3302-14068-58718
55-25-271-1825-10735-59425
9199-317-3351-26141
144298-126-4606
2076272580
27123567
35185
44