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A300539 as a triangular array

1
11
131
1551
11612161
1403636401
11131223001221131
1304429143614364293041
18331585897412951897415858331
1227057555201212454312454352012575522701
1619421084311037

A300539 as a square array

11111111111
135164011330483322706194
1512361224291585575521084
116363001436897452012311037
140122143612951124543
11134298974124543
1304158552012
18335755
12270
1
11111111111
135164011330483322706194
1512361224291585575521084
116363001436897452012311037
140122143612951124543
11134298974124543
1304158552012
18335755
12270
1