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A104570 as a triangular array

1
23
361
4923
512361
6154923
718512361
8216154923
924718512361
10278216154923
1130924718512361
123310278216154923
13361130924718512361

A104570 as a square array

12345678910111213
369121518212427303336
1234567891011
36912151821242730
123456789
3691215182124
1234567
369121518
12345
36912
123
36
1
12345678910111213
369121518212427303336
1234567891011
36912151821242730
123456789
3691215182124
1234567
369121518
12345
36912
123
36
1