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A217874 as a triangular array

1
10
121
1430
16941
18191650
11033442561
1125196853670
114731802251464981
116993045014562316490
118129476985118283334481101

A217874 as a square array

11111111111
024681012141618
1391933517399129
04164496180304476
152585225501985
06361464561182
1749231833
0864344
1981
010
1
11111111111
024681012141618
1391933517399129
04164496180304476
152585225501985
06361464561182
1749231833
0864344
1981
010
1