A043080 - OEIS

A043080

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

1, 2, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 101, 112, 123, 134, 145, 156, 167, 178, 189, 200, 1001, 1011, 1021, 1031, 1041, 1051, 1061, 1071, 1081, 1091, 1102, 1112, 1122, 1132, 1142, 1152, 1162, 1172, 1182, 1192, 1203, 1213

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OFFSET

1,2

LINKS

Table of n, a(n) for n=1..44.

MATHEMATICA

(#+9)/10&/@Select[Range[100000], PalindromeQ[#]&&IntegerDigits[#][[1]]==1&] (* Harvey P. Dale, Jul 20 2024 *)

CROSSREFS

Sequence in context: A359207 A068225 A367810 * A108199 A137904 A175414

Adjacent sequences: A043077 A043078 A043079 * A043081 A043082 A043083

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved