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A287548 as a triangular array

1
21
532
14974
4228231610
1329076574224
42929725519915610866
14301001869695563420304174
4862343230032442201915681210836504

A287548 as a square array

125144213242914304862
139289029710013432
2723762558693003
416571996952442
10421565632019
241084201568
663041210
174836
504
125144213242914304862
139289029710013432
2723762558693003
416571996952442
10421565632019
241084201568
663041210
174836
504