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A145890 as a triangular array

1
12
226
54620
1410122070
4228304070252
1328484100140252924
4292642522803505049243432
143085879284098012601848343212870
486228602574264029403528462068641287048620

A145890 as a square array

1125144213242914304862
2241028842648582860
661230842527922574
2020401002808402640
70701403509802940
25225250412603528
92492418484620
343234326864
1287012870
48620
1125144213242914304862
2241028842648582860
661230842527922574
2020401002808402640
70701403509802940
25225250412603528
92492418484620
343234326864
1287012870
48620