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A172431 as a triangular array

1
12
143
16104
1821205
1103656356
11255120126567
11478220330252848
1161053647157924621209
11813656013652002171679216510

A172431 as a square array

1111111111
24681012141618
31021365578105136
42056120220364560
5351263307151365
6562527922002
7844621716
8120792
9165
10

A172431 as an upper right triangle

1111111111
24681012141618
31021365578105136
42056120220364560
5351263307151365
6562527922002
7844621716
8120792
9165
10

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Last modified March 28 15:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)