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A131424 as a triangular array

1
23
457
67911
1011131519
121315172123
16171921252731
1819212327293335
222325273133373943
28293133373943454955
3031333539414547515759

A131424 as a square array

124610121618222830
35711131719232931
7913151921253133
1115172123273335
19212527313739
232729333941
3133374345
35394547
434951
5557
59

A131424 as an upper right triangle

124610121618222830
35711131719232931
7913151921253133
1115172123273335
19212527313739
232729333941
3133374345
35394547
434951
5557
59

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Last modified September 23 01:32 EDT 2020. Contains 337291 sequences. (Running on oeis4.)