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A054589 as a triangular array

1
11
243
6182515
2496190210105
120600152623802205945
72043201335626488346502772010395
504035280128052305620507430575190405405135135

A054589 as a square array

1126241207205040
141896600432035280
325190152613356128052
15210238026488305620
105220534650507430
94527720575190
10395405405
135135
1126241207205040
141896600432035280
325190152613356128052
15210238026488305620
105220534650507430
94527720575190
10395405405
135135