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A278317 as a triangular array

0
12
232
2432
24432
244432
2444432
24444432
244444432
2444444432
24444444432
244444444432
2444444444432
24444444444432

A278317 as a square array

01222222222222
2344444444444
234444444444
23444444444
2344444444
234444444
23444444
2344444
234444
23444
2344
234
23
2
01222222222222
2344444444444
234444444444
23444444444
2344444444
234444444
23444444
2344444
234444
23444
2344
234
23
2