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A017577 as a simple table

na(n)
0262144
168719476736
210578455953408
3262144000000000
42779905883635712
518014398509481984
684590643846578176
7316478381828866048
81000000000000000000
92773078757450186752
106930988311686938624
1115916595351771938816
1234068690316840665088
1368719476736000000000

[262144,68719476736,10578455953408,
 262144000000000,2779905883635712,
 18014398509481984,84590643846578176,
 316478381828866048,1000000000000000000,
 2773078757450186752,6930988311686938624,
 15916595351771938816,34068690316840665088,
 68719476736000000000]