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A087738 as a triangular array

1
21
421
6421
106421
12106421
16141611844301
18162013274541021
22202414076961621201
282428152941122741902781
302634208156114300234614461
363646240158

A087738 as a square array

12461012161822283036
124610141620242636
1246162024283446
124118132140152208240
1244747694156158
1305496112114
1102162274300
1120190234
1278614
146
1
12461012161822283036
124610141620242636
1246162024283446
124118132140152208240
1244747694156158
1305496112114
1102162274300
1120190234
1278614
146
1