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A260972 as a simple table

na(n)
148
2133
3372
41513
54592
618706
745504
8195280
9441072
102093846
114057280
1220962048
1338827984
14225849174
15367470344
162376475916
173621888816
1826598528246
1937810953848
20300880005340
21400697050360

[48,133,372,1513,4592,18706,45504,195280,441072,
 2093846,4057280,20962048,38827984,225849174,
 367470344,2376475916,3621888816,26598528246,
 37810953848,300880005340,400697050360]