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A198723 as a triangular array

1
11
242
534345
15499202749915
52105072328412328411050752
2032724103400379217354903234003792272410203
8767817980531584079514116848071914116848071953158407957817980876
4111

A198723 as a square array

112515522038764111
1434499105072724107817980
2342027232841340037925315840795
5499232841173549032141168480719
151050734003792141168480719
522724105315840795
2037817980
876
112515522038764111
1434499105072724107817980
2342027232841340037925315840795
5499232841173549032141168480719
151050734003792141168480719
522724105315840795
2037817980
876