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A171239 as a triangular array

1
12
223
2434
44645
486856
781281067
8141216101278
814121610127812
162116201214891424
242820241410910

A171239 as a square array

1122447881624
22448814142128
33661212121620
448816162024
551010101214
6612121410
77789
88910
1214
24
1122447881624
22448814142128
33661212121620
448816162024
551010101214
6612121410
77789
88910
1214
24