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A128980 as a triangular array

1
01
101
0001
30001
010001
5000001
00000001
001000001
0300000001

A128980 as a square array

1010305000
100010003
10000010
1000000
100000
10000
1000
100
10
1

A128980 as an upper right triangle

1010305000
100010003
10000010
1000000
100000
10000
1000
100
10
1

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Last modified April 19 06:16 EDT 2024. Contains 371782 sequences. (Running on oeis4.)