A180454 Numbers that are 5-digit palindromes in at least two bases.

2293, 3074, 5001, 5854, 6148, 6953, 7409, 7703, 7801, 8200, 10252, 10658, 11314, 12547, 13131, 13331, 13459, 14510, 14762, 15005, 15731, 16561, 16708, 17876, 19636, 20010, 23341, 24762, 25752, 26462, 26662, 26962, 27310, 27472, 28129

Offset

1,1

Links

Table of n, a(n) for n=1..35.

Example

2293 = 33133_5 = 14341_6.
3074 = 44244_5 = 22122_6.

Prog

(PARI) isok(m) = {my(nb = 0); for (b=2, m-1, my(d=digits(m, b)); if ((#d == 5) && (Vecrev(d) == d), nb++); if (nb == 2, return (1)); ); } \\ Michel Marcus, Feb 13 2021

Crossrefs

Cf. A180453.

Sequence in context: A251302 A198146 A020404 * A216899 A023323 A163513

Adjacent sequences: A180451 A180452 A180453 * A180455 A180456 A180457

Keyword

nonn,base

Author

John L. Drost, Sep 05 2010

Status

approved