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A340968 as a triangular array

1
11
121
1351
1413151
152571511
16411994411881
1761429179529557311
18857915073174222080529501
1911313151157164469177463151695122351

A340968 as a square array

1111111111
123456789
151325416185113
115711994297911315
1514411795507311571
118829551742264469
173120805177463
12950151695
112235
1
1111111111
123456789
151325416185113
115711994297911315
1514411795507311571
118829551742264469
173120805177463
12950151695
112235
1