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A263271 as a triangular array

0
21
642
12863
1801254
22018785
300220076
34030000127
420340001808
4604200022009
5404600030001110
580540003400161411

A263271 as a square array

026121822303442465458
14800000000
261218223034424654
357000000
48000000
5700000
61218223034
70000
8000
91116
1014
11
026121822303442465458
14800000000
261218223034424654
357000000
48000000
5700000
61218223034
70000
8000
91116
1014
11