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A209771 as a triangular array

1
12
254
29148
314323616
320601008832
42710022028820864
435154420728784480128
5442247281568224020481088256
554312117630245376652851842432512
665420

A209771 as a square array

11223344556
25914202735445465
4143260100154224312420
8361002204207281176
168828872815683024
3220878422405376
6448020486528
12810885184
2562432
512

A209771 as an upper right triangle

11223344556
25914202735445465
4143260100154224312420
8361002204207281176
168828872815683024
3220878422405376
6448020486528
12810885184
2562432
512

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Last modified February 7 06:02 EST 2023. Contains 360112 sequences. (Running on oeis4.)