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A318552 as a triangular array

0
11
131
2662
3105103
5212121215
846446444468
1310210621921910610213
2122025858984258925822021
34491600178231723172178260049134
551077147656211207314760120735621

A318552 as a square array

011235813213455
1361021461022204911077
16521441062586001476
210216421958917825621
32144219842317212073
546106589317214760
8102258178212073
132206005621
21491
34
011235813213455
1361021461022204911077
16521441062586001476
210216421958917825621
32144219842317212073
546106589317214760
8102258178212073
132206005621
21491
34