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A154341 as a triangular array

1
1-1
1-31
1-760
1-15250-6
1-31900-9030
1-633010-840630-90
1-1279660-63007980-25200
1-25530250-4170679380-4158002520

A154341 as a square array

111111111
-1-3-7-15-31-63-127-255
1625903019663025
000000
-6-90-840-6300-41706
30630798079380
-90-2520-41580
00
2520
111111111
-1-3-7-15-31-63-127-255
1625903019663025
000000
-6-90-840-6300-41706
30630798079380
-90-2520-41580
00
2520