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A277389 as a simple table

na(n)
11
22
31729
419683001
5367804801
6631071001
72064236401
82320690177
924899816449
1040017045601
11110592000001
12137299665601
13432081216001
14479534887801
15760355883001
161111195454401
173176523000001
183495866888449
193837165696001
208571867768001
2114373832968001

[1,2,1729,19683001,367804801,631071001,2064236401,
 2320690177,24899816449,40017045601,110592000001,
 137299665601,432081216001,479534887801,
 760355883001,1111195454401,3176523000001,
 3495866888449,3837165696001,8571867768001,
 14373832968001]