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A232573 as a simple table

na(n)
172
21064
316316
4265670
54252876
667979266
71090643352
817469440576
9279889357176
104484766979158
1171855180523860
121151291899304218
1318446489829419748
14295556353549647088
154735518134130583640

[72,1064,16316,265670,4252876,67979266,1090643352,
 17469440576,279889357176,4484766979158,
 71855180523860,1151291899304218,18446489829419748,
 295556353549647088,4735518134130583640]