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A140648 as a triangular array

1
20
410
8201
164102
3282014
641641028
128328201416
25664164102832
51212832820141664

A140648 as a square array

1248163264128256512
01248163264128
0012481632
1001248
210012
42100
8421
1684
3216
64
1248163264128256512
01248163264128
0012481632
1001248
210012
42100
8421
1684
3216
64

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Last modified September 19 20:04 EDT 2024. Contains 376014 sequences. (Running on oeis4.)