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A201803 as a triangular array

1
55
198519
8545545585
381361740573617381
1751286254833548335286251751
81352358275629619885895629612358278135
381651972115709902120960485209604857099021197211538165
18032516703881

A201803 as a square array

1519853811751813538165180325
585455361728625235827197211516703881
194554057483355629617099021
8536174833598858920960485
3812862556296120960485
17512358277099021
81351972115
38165

A201803 as an upper right triangle

1519853811751813538165180325
585455361728625235827197211516703881
194554057483355629617099021
8536174833598858920960485
3812862556296120960485
17512358277099021
81351972115
38165

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Last modified March 3 17:46 EST 2024. Contains 370512 sequences. (Running on oeis4.)