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A300040 as a triangular array

0
11
141
217172
361113613
52166286282165
87933669566336697938
13290721792518625186221792290713
21106221286104863057662314863051286101062221
3438809758715453202511576060

A300040 as a square array

0112358132134
14176121679329071062238809
117113628366921792128610758715
2616285663518624863054532025
321636695186276623111576060
579321792486305
82907128610
1310622
21
0112358132134
14176121679329071062238809
117113628366921792128610758715
2616285663518624863054532025
321636695186276623111576060
579321792486305
82907128610
1310622
21