A046241 Numbers whose cube is palindromic in base 9.

0, 1, 2, 10, 38, 82, 91, 730, 6562, 6643, 59050, 531442, 532171, 4782970, 43046722, 43053283, 387420490, 3486784402, 3486843451, 31381059610

Offset: 1

Author

Patrick De Geest, May 15 1998

Keywords

• nonn
• base
• more

Comments

No more terms through 190000000000. - Ryan Propper, Jun 01 2006

Links

• Patrick De Geest, World!Of Numbers, Palindromic cubes in bases 2 to 17.

Crossrefs

Cf. A046242.

Programs

PARI

isok(k) = my(d=digits(k^3, 9)); Vecrev(d) == d; \\ Michel Marcus, Aug 02 2022

Python

from itertools import count, islice
from sympy.ntheory import is_palindromic as ispal
def agen(startk=0): yield from (k for k in count(startk) if ispal(k**3, 9))
print(list(islice(agen(), 13))) # Michael S. Branicky, Aug 02 2022

Extensions

More terms from Ryan Propper, Jun 01 2006