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A302998 as a triangular array

1
11
121
1331
14641
15111151
1620291761
173670542671
1863157165993581
191063374823571634591
1101717021319120368823958101
1112651420339038192673115434473111

A302998 as a square array

111111111111
1234567891011
13611203663106171265
141129701573377021420
15175416548213193390
16269935712033819
17351636882673
18452391154
1958344
11073
111
1
111111111111
1234567891011
13611203663106171265
141129701573377021420
15175416548213193390
16269935712033819
17351636882673
18452391154
1958344
11073
111
1