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A259520 as a simple table

na(n)
1380
26100
393028
41447270
522453286
6348802846
75417785744
884159480298
91307320968014
1020307866257912
11315461519753608
124900368198470600
1376122150981402540
141182478924960407640
1518368587834267497600

[380,6100,93028,1447270,22453286,348802846,
 5417785744,84159480298,1307320968014,
 20307866257912,315461519753608,4900368198470600,
 76122150981402540,1182478924960407640,
 18368587834267497600]