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

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