A043030 Base-9 palindromes that start with 3.

3, 30, 246, 255, 264, 273, 282, 291, 300, 309, 318, 2190, 2280, 2370, 2460, 2550, 2640, 2730, 2820, 2910, 19686, 19767, 19848, 19929, 20010, 20091, 20172, 20253, 20334, 20424, 20505, 20586, 20667, 20748, 20829, 20910

Offset: 1

Author

Clark Kimberling

Keywords

• nonn
• base

Links

• Robert P. P. McKone, Table of n, a(n) for n = 1..911

Crossrefs

Cf. A007095, A029955, A043074.

Cf. A043038.

Programs

Mathematica

okQ[n_] := Module[{idn = IntegerDigits[n, 9]}, First[idn] == 3 && FromDigits[IntegerDigits[n, 9]] == FromDigits[Reverse[idn]]]; Select[Range[20910], okQ] (* Robert P. P. McKone, Aug 22 2021, after Harvey P. Dale in A043038 *)