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A208751 as a triangular array

1
12
162
112122
12040182
13010086242
142210294150302
156392812656232362
172672193222681240332422
19010804116662451722100450482
1110165080521702817996

A208751 as a square array

11111111111
2612203042567290110
2124010021039267210801650
21886294812193241168052
2241506562268662417028
2302321240517217996
2363322100
242450
248
2
11111111111
2612203042567290110
2124010021039267210801650
21886294812193241168052
2241506562268662417028
2302321240517217996
2363322100
242450
248
2