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A264017 as a triangular array

1
21
451
825131
16105169341
3244115731156891
641869146412057079212331
1287921146410366025269225542896101
25633553146410073205009150625352412537210015971
51214212914641000

A264017 as a square array

1248163264128256512
15251054411869792133553142129
113169157314641146410146410014641000
1341156205703660257320500
18979212692259150625
1233542893524125
1610372100
11597
1
1248163264128256512
15251054411869792133553142129
113169157314641146410146410014641000
1341156205703660257320500
18979212692259150625
1233542893524125
1610372100
11597
1