A043070 a(n)=(s(n)+2)/8, where s(n)=n-th base 8 palindrome that starts with 6 (in base 8), written in decimal digits.

1, 7, 49, 50, 51, 52, 53, 54, 55, 56, 385, 394, 403, 412, 421, 430, 439, 448, 3073, 3081, 3089, 3097, 3105, 3113, 3121, 3129, 3138, 3146, 3154, 3162, 3170, 3178, 3186, 3194, 3203, 3211, 3219, 3227, 3235, 3243, 3251, 3259

Offset

1,2

Links

Table of n, a(n) for n=1..42.

Mathematica

(#+2)/8&/@Select[Range[30000], IntegerDigits[#, 8][[1]]==6&&IntegerDigits[#, 8] == Reverse[ IntegerDigits[#, 8]]&] (* Harvey P. Dale, May 07 2022 *)

Crossrefs

Sequence in context: A330329 A115589 A014390 * A083930 A178367 A036132

Adjacent sequences: A043067 A043068 A043069 * A043071 A043072 A043073

Keyword

nonn,base

Author

Clark Kimberling

Extensions

Definition clarified by Harvey P. Dale, May 07 2022

Status

approved