A043088 (s(n)+1)/10, where s(n)=n-th base 10 palindrome that starts with 9.

1, 10, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 901, 912, 923, 934, 945, 956, 967, 978, 989, 1000, 9001, 9011, 9021, 9031, 9041, 9051, 9061, 9071, 9081, 9091, 9102, 9112, 9122, 9132, 9142, 9152, 9162, 9172, 9182, 9192, 9203

Offset

1,2

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Mathematica

(#+1)/10&/@(Table[Select[Range[9*10^ex, 10^(ex+1)-1], PalindromeQ], {ex, 0, 4}]//Flatten) (* Harvey P. Dale, Mar 30 2025 *)

Crossrefs

Sequence in context: A337867 A374228 A116348 * A175710 A226389 A119047

Adjacent sequences: A043085 A043086 A043087 * A043089 A043090 A043091

Keyword

nonn,base

Author

Clark Kimberling

Status

approved