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A272885

Cubefree taxi-cab numbers.

1729, 20683, 40033, 149389, 195841, 327763, 443889, 684019, 704977, 1845649, 2048391, 2418271, 2691451, 3242197, 3375001, 4342914, 4931101, 5318677, 5772403, 5799339, 6058747, 7620661, 8872487, 9443761, 10702783, 10765603, 13623913, 16387189, 16776487, 16983854, 17045567, 18406603

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OFFSET

1,1

COMMENTS

Taxi-cab numbers (A001235) that are not divisible by any cube > 1.

A080642 belongs to another version that A011541 focuses on.

Cubeful taxi-cab numbers are 4104, 13832, 32832, 39312, 46683, 64232, 65728, 110656, 110808, 134379, 165464, 171288, ...

LINKS

Alois P. Heinz, Table of n, a(n) for n = 1..10000 (first 3000 terms from Ziad Elazhari)

EXAMPLE

195841 is a term because 195841 is a member of A001235 and 195841 = 37*67*79.

CROSSREFS