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A216219 as a triangular array

1
11
121
1331
14641
05101050
0515201550
002035352000
00205570552000
0007512512575000
00075200250200

A216219 as a square array

11111000000
1234550000
1361015202000
14102035557575
15153570125200
052055125250
002075200
000
00
0
11111000000
1234550000
1361015202000
14102035557575
15153570125200
052055125250
002075200
000
00
0