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A299521 as a triangular array

1
11
111
1111
121221
155551
193383391
12255414155221
145132117285117132451
1101272476154015404762721011
12186301743586912411586917436302181
147713557078

A299521 as a square array

111111111111
1112592245101218477
1112533551322726301355
12584111747617437078
15334128515405869
1955117154012411
1221324765869
1452721743
1101630
1218
1
111111111111
1112592245101218477
1112533551322726301355
12584111747617437078
15334128515405869
1955117154012411
1221324765869
1452721743
1101630
1218
1