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A174387 as a triangular array

1
11
1-31
1-7-71
1-15105-151
1-31465465-311
1-631953-292951953-631
1-1278001-248031-2480318001-1271
1-25532385-204025563247905-204025532385-2551
1-511130305-1654873510425703051042570305-16548735130305-5111

A174387 as a square array

1111111111
1-3-7-15-31-63-127-255-511
1-71054651953800132385130305
1-15465-29295-248031-2040255-16548735
1-311953-248031632479051042570305
1-638001-20402551042570305
1-12732385-16548735
1-255130305
1-511
1
1111111111
1-3-7-15-31-63-127-255-511
1-71054651953800132385130305
1-15465-29295-248031-2040255-16548735
1-311953-248031632479051042570305
1-638001-20402551042570305
1-12732385-16548735
1-255130305
1-511
1