A043029 Base-9 palindromes that start with 2.

2, 20, 164, 173, 182, 191, 200, 209, 218, 227, 236, 1460, 1550, 1640, 1730, 1820, 1910, 2000, 2090, 2180, 13124, 13205, 13286, 13367, 13448, 13529, 13610, 13691, 13772, 13862, 13943, 14024, 14105, 14186, 14267, 14348

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..977 (* All terms up to 10^7. *)

Mathematica

pal2Q[n_]:=With[{id=IntegerDigits[n, 9]}, id[[1]]==2&&PalindromeQ[id]]; Select[Range[15000], pal2Q] (* Harvey P. Dale, May 09 2026 *)

Crossrefs

Cf. A007095.

Sequence in context: A248337 A270444 A093130 * A164944 A144485 A115489

Adjacent sequences: A043026 A043027 A043028 * A043030 A043031 A043032

Keyword

nonn,base

Author

Clark Kimberling

Status

approved