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A209235 as a triangular array

1
21
311
4131
51541
617471
81114191618
191134251638
291101154311658
57471111174371678
64117761121194431698
641871931231

A209235 as a square array

1234568129576464
1111119147117187
135711110176193
1444131111123
17194151121
116254171
181631419
3816374
581643
7816
98

A209235 as an upper right triangle

1234568129576464
1111119147117187
135711110176193
1444131111123
17194151121
116254171
181631419
3816374
581643
7816
98

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)