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A298240 as a triangular array

1
11
151
113131
14222421
11271241241271
138940911564093891
11192192181178117192111921
1364589086662610716366626890836451
111161419335638261636306163630656382641933

A298240 as a square array

1111111111
1513421273891192364511161
113221244091921890841933
1421241156811766626563826
112740981171071631636306
13891921666261636306
111928908563826
1364541933
1

A298240 as an upper right triangle

1111111111
1513421273891192364511161
113221244091921890841933
1421241156811766626563826
112740981171071631636306
13891921666261636306
111928908563826
1364541933
1

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Last modified May 25 19:10 EDT 2020. Contains 334595 sequences. (Running on oeis4.)