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A087735 as a triangular array

1
22
323
4444
54445
664466
7674767
88888888
988888889
10108888881010
11101188888111011
12121212888812121212
13121212138881312121213

A087735 as a square array

12345678910111213
2244668810101212
34447888111212
444488881212
5678888813
66888888
7888888
888888
910111213
10101212
111212
1212
13
12345678910111213
2244668810101212
34447888111212
444488881212
5678888813
66888888
7888888
888888
910111213
10101212
111212
1212
13