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A300506 as a triangular array

1
22
333
5225
83438
13677613
2166206621
3411173232171134
552634685668342655
894357191208208191574389
144828050454611625465048082144
23317816413532006

A300506 as a square array

123581321345589144233
23236611264382178
3247617345780164
5372032681915041353
86632562085462006
13617682081162
211134191546
342657504
554380
8982
144
123581321345589144233
23236611264382178
3247617345780164
5372032681915041353
86632562085462006
13617682081162
211134191546
342657504
554380
8982
144