A182232 - OEIS

A182232

Numbers that are palindromic in bases 2 and 5.

0, 1, 3, 31, 93, 119, 2709, 38937, 520831, 682341, 340134981, 7609865031, 17935304097, 26777829859, 169179279801, 567897922593, 286118927218753, 2996750083037781, 4738749440161121, 6299497017331917, 8829547069230943

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,3

COMMENTS

Intersection of A006995 and A029952. - Michel Marcus, Oct 08 2014

LINKS

Ray Chandler, Table of n, a(n) for n = 1..25

EXAMPLE

2709 base 2 = 101010010101 and 2709 base 5 = 41314.

MATHEMATICA

b1 = 2; b2 = 5; lst = {}; Do[d1 = IntegerDigits[n, b1]; d2 = IntegerDigits[n, b2]; If[d1 == Reverse[d1] && d2 == Reverse[d2], AppendTo[lst, n]], {n, 1000000}]; lst (* T. D. Noe, Apr 19 2012 *)

CROSSREFS

Cf. A060792, A097856.

Sequence in context: A137185 A243471 A152417 * A294973 A307711 A077547

Adjacent sequences: A182229 A182230 A182231 * A182233 A182234 A182235

KEYWORD

nonn,base

AUTHOR

Alex Ratushnyak, Apr 19 2012

EXTENSIONS

Term 0 prepended by Robert G. Wilson v, Oct 08 2014

a(12)-a(16) from Robert G. Wilson v, Oct 11 2014

a(17)-a(21) and b-file from Ray Chandler, Oct 24 2014

STATUS

approved