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A220508 as a triangular array

0
13
428
95715
161061424
251711132335
36261812223448
4937271921334763
645038282032466280
81655139293145617999
100826652403044607898120

A220508 as a square array

0149162536496481100
32510172637506582
876111827385166
1514131219283952
24232221202940
353433323130
4847464544
63626160
807978
9998
120
0149162536496481100
32510172637506582
876111827385166
1514131219283952
24232221202940
353433323130
4847464544
63626160
807978
9998
120