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A257513 as a triangular array

1
52
9162
1320244
173442722
21383666484
25525496781202
2956489060102724
337066120901441141686
3774881581241941602303122
41889213884150961622321206
45921141901402261762623602484084

A257513 as a square array

159131721252933374145
216203438525670748892
22442365448668892114
472669690120158138190
24878609012484140
4120102144194150226
27211416096176
4168230162262
6312232360
2120248
6408
4
159131721252933374145
216203438525670748892
22442365448668892114
472669690120158138190
24878609012484140
4120102144194150226
27211416096176
4168230162262
6312232360
2120248
6408
4