A043067 a(n)=(s(n)+5)/8, where s(n)=n-th base 8 palindrome that starts with 3.

1, 4, 25, 26, 27, 28, 29, 30, 31, 32, 193, 202, 211, 220, 229, 238, 247, 256, 1537, 1545, 1553, 1561, 1569, 1577, 1585, 1593, 1602, 1610, 1618, 1626, 1634, 1642, 1650, 1658, 1667, 1675, 1683, 1691, 1699, 1707, 1715, 1723

Offset

1,2

Links

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

Mathematica

b8s3Q[n_]:=Module[{idn=IntegerDigits[n, 8]}, idn[[1]]==3&&idn== Reverse[ idn]]; (#+5)/8&/@Select[Range[15000], b8s3Q] (* Harvey P. Dale, Dec 26 2021 *)

Crossrefs

Sequence in context: A107734 A302624 A238515 * A289273 A309056 A095970

Adjacent sequences: A043064 A043065 A043066 * A043068 A043069 A043070

Keyword

nonn,base

Author

Clark Kimberling

Status

approved