A043067 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

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

(list; graph; refs; listen; history; text; internal format)

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