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A129690 as a triangular array

1
11
321
3531
58841
513161251
71829281761
7254757452371
93272104102683081
941104176206170983891

A129690 as a square array

1133557799
12581318253241
13816294772104
14122857104176
151745102206
162368170
173098
1838
19
1
1133557799
12581318253241
13816294772104
14122857104176
151745102206
162368170
173098
1838
19
1