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A220670 as a triangular array

3
3-1
3-31
3-65-1
3-1015-71
3-1535-289-1
3-2170-8445-111
3-28126-210165-6613-1
3-36210-462495-28691-151
3-45330-9241287-1001455-12017-1
3-55495-17163003-30031820-680153-191

A220670 as a square array

33333333333
-1-3-6-10-15-21-28-36-45-55
15153570126210330495
-1-7-28-84-210-462-924-1716
194516549512873003
-1-11-66-286-1001-3003
113914551820
-1-15-120-680
117153
-1-19
1
33333333333
-1-3-6-10-15-21-28-36-45-55
15153570126210330495
-1-7-28-84-210-462-924-1716
194516549512873003
-1-11-66-286-1001-3003
113914551820
-1-15-120-680
117153
-1-19
1