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A233724 as a triangular array

280
18201820
110161358811016
6882810164410164468828
423220820524998048820524423220
26248726622988109506761095067666229882624872
16201200548656961222181881700704481222181885486569616201200

A233724 as a square array

28018201101668828423220262487216201200
182013588101644820524662298854865696
1101610164499804810950676122218188
6882882052410950676170070448
4232206622988122218188
262487254865696
16201200
28018201101668828423220262487216201200
182013588101644820524662298854865696
1101610164499804810950676122218188
6882882052410950676170070448
4232206622988122218188
262487254865696
16201200