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A145615 as a simple table

na(n)
118
2883
323566
45278979
5380087174
666895348819
713914232622662
8178102177617521
94036982692723202
106136213692944321089
1132726473029037904778
1272260052448115886127009
132890402097924635887833902

[18,883,23566,5278979,380087174,66895348819,
 13914232622662,178102177617521,4036982692723202,
 6136213692944321089,32726473029037904778,
 72260052448115886127009,2890402097924635887833902]