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A281658 as a simple table

na(n)
10
220444
3982206
432771472
51205962480
637763465272
71154703692514
834504258166264
91006968332779830
1028949112532504572

[0,20444,982206,32771472,1205962480,37763465272,
 1154703692514,34504258166264,1006968332779830,
 28949112532504572]