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A124886 as a triangular array

1
17
1119
11735
1198414
126261215
1271810203022
129133121234028
14125383234163639
1433335574224444850

A124886 as a square array

1111111111
71117192627294143
938218132533
54610313835
141220213257
1530233442
22401624
283644
3948
50
1111111111
71117192627294143
938218132533
54610313835
141220213257
1530233442
22401624
283644
3948
50