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A297506 as a triangular array

1
21
4101
731291
1268110871
212183145312801
377291829228125348761
652097880323348142011140527351
114613934757191192270845888085317585831
2001893215767312477163624914

A297506 as a square array

124712213765114200
11031682187292097613918932
1291103141829880334757157673
1875312281233481911921247716
12802534142012708453624914
18761140588808
1273553175
18583
1
124712213765114200
11031682187292097613918932
1291103141829880334757157673
1875312281233481911921247716
12802534142012708453624914
18761140588808
1273553175
18583
1