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A086606 as a triangular array

1
12
139
141432
152055140
162786243630
173512639210992870
18441765981808504813256
1954237873283584332345461389
11065310123042721349539640109400286710
11177

A086606 as a square array

11111111111
234567891011
91420273544546577
325586126176237310
1402433925988731230
6301099180828354272
28705048843313495
132562345439640
61389109400
286710
11111111111
234567891011
91420273544546577
325586126176237310
1402433925988731230
6301099180828354272
28705048843313495
132562345439640
61389109400
286710