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A209820 as a triangular array

1
22
265
281812
28305229
283410414670
2834136342402169
283414451410801090408
2834144594184833062920985
283414461023606370987277462378
28341446102552

A209820 as a square array

12222222222
2688888888
51830343434343434
1252104136144144144144
29146342514594610610
704021080184823602552
169109033066370
40829209872
9857746
2378

A209820 as an upper right triangle

12222222222
2688888888
51830343434343434
1252104136144144144144
29146342514594610610
704021080184823602552
169109033066370
40829209872
9857746
2378

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Last modified November 17 13:33 EST 2019. Contains 329230 sequences. (Running on oeis4.)