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A076756 as a triangular array

1
-11
1-31
-15-61
1-715-101
-19-2835-151
1-1145-8470-211
-113-66165-210126-281
1-1591-286495-462210-361
-117-120455-10011287-924330-451
1-19153-6801820-30033003-1716495-551

A076756 as a square array

1-11-11-11-11-11
1-35-79-1113-1517-19
1-615-2845-6691-120153
1-1035-84165-286455-680
1-1570-210495-10011820
1-21126-4621287-3003
1-28210-9243003
1-36330-1716
1-45495
1-55
1
1-11-11-11-11-11
1-35-79-1113-1517-19
1-615-2845-6691-120153
1-1035-84165-286455-680
1-1570-210495-10011820
1-21126-4621287-3003
1-28210-9243003
1-36330-1716
1-45495
1-55
1