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A181370 as a triangular array

1
11
151
111111
11942191
129110110291
141235402235411
15544111351135441551
171756270940702709756711
18912125740119821198257401212891
11091845111243061842510306181112418451091

A181370 as a square array

11111111111
1511192941557189109
1114211023544175612121845
11911040211352709574011124
129235113540701198230618
14144127091198242510
155756574030618
171121211124
1891845
1109
1
11111111111
1511192941557189109
1114211023544175612121845
11911040211352709574011124
129235113540701198230618
14144127091198242510
155756574030618
171121211124
1891845
1109
1