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A212551 as a triangular array

1
00
100
1100
21100
231100
4331100
46431100
777431100
81198431100
121315108431100
14201817118431100

A212551 as a square array

10112244781214
00113367111320
001134791518
00113481017
001134811
0011348
001134
00113
0011
001
00
0
10112244781214
00113367111320
001134791518
00113481017
001134811
0011348
001134
00113
0011
001
00
0