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A090806 as a triangular array

1
11
121
1221
13431
135531
1479741
1491212941
15111720171151
1513222828221351
161629404540291661
16183553646453351861
172144709110091

A090806 as a square array

1111111111111
122334455667
1245791113161821
1359121722293544
137122028405370
1491728456491
1411224064100
1513295391
151635
1618
16
1

A090806 as an upper right triangle

1111111111111
122334455667
1245791113161821
1359121722293544
137122028405370
1491728456491
1411224064100
1513295391
151635
1618
16
1

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Last modified November 11 18:50 EST 2019. Contains 329031 sequences. (Running on oeis4.)