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A143966 as a triangular array

1
21
223
2267
2261417
226143441
22614348299
226143482198239
226143482198478577

A143966 as a square array

122222222
12222222
3666666
71414141414
1734343434
41828282
99198198
239478
577
122222222
12222222
3666666
71414141414
1734343434
41828282
99198198
239478
577