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

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

Cf. A001235, A004709, A011541, A080642.

Sequence in context: A339818 A379849 A293649 * A272935 A284671 A265328

Adjacent sequences: A272882 A272883 A272884 * A272886 A272887 A272888

Keyword

nonn

Author

Altug Alkan, May 08 2016

Status

approved