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A303810 as a triangular array

1
11
102
1013
10015
100127
10001211
100011415
1000012422
10000112730
100000113842
10000011241256
100000011251477
10000001113

A303810 as a square array

11111111111111
1000000000000
210000000000
31100000000
5211000000
721110000
114211100
15421111
2273211
308421
421253
5614
77
11111111111111
1000000000000
210000000000
31100000000
5211000000
721110000
114211100
15421111
2273211
308421
421253
5614
77