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A072170 as a triangular array

1
11
111
1211
11211
132211
1232211
13342211
114342211
1445442211
13545442211
155856442211
1266856442211
15698966442211

A072170 as a square array

11111111111111
1121323143525
112233445566
11224354869
1122445588
112244659
11224466
1122446
112244
11224
1122
112
11
1

A072170 as an upper right triangle

11111111111111
1121323143525
112233445566
11224354869
1122445588
112244659
11224466
1122446
112244
11224
1122
112
11
1

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Last modified March 29 06:15 EDT 2024. Contains 371265 sequences. (Running on oeis4.)