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A220412 as a triangular array

1
01
015
042135
018101210175
048286671770385
033168207974531531715715525525175175
086405656815446623123120520510510525025
01562544106155483058279649534277496896403148145011911900

A220412 as a square array

100000000
11418483316886401562544
5211012862079745656810615548
3521067153153115446630582796
17577071571523123149534277
38552552520520549689640
17517510510531481450
2502511911900

A220412 as an upper right triangle

100000000
11418483316886401562544
5211012862079745656810615548
3521067153153115446630582796
17577071571523123149534277
38552552520520549689640
17517510510531481450
2502511911900

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Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)