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A273506 as a triangular array

1
-17
1-111
-1319-143715
1-26559-2214199
-2139-3236137-226152003
1-10897135983-4199527459-5200337145
-115409-31728121586489-528777429-887111964315
1-76269123-100901274873-8671227447-22744739803225
-2466003-213739522629-59074189226061641-1069000925701511-42077695547010035

A273506 as a square array

1-11-11-21-11-2
7-1319-26139-1089715409-76466003
11-143559-323135983-317281269123-213739
715-2216137-419921586489-100901522629
4199-2261527459-52877274873-59074189
52003-520037429-8671226061641
37145-88711227447-10690009
1964315-22744725701511
39803225-42077695
547010035

A273506 as an upper right triangle

1-11-11-21-11-2
7-1319-26139-1089715409-76466003
11-143559-323135983-317281269123-213739
715-2216137-419921586489-100901522629
4199-2261527459-52877274873-59074189
52003-520037429-8671226061641
37145-88711227447-10690009
1964315-22744725701511
39803225-42077695
547010035

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Last modified February 23 16:00 EST 2020. Contains 332171 sequences. (Running on oeis4.)