A043066 - 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

A043066

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

1, 3, 17, 18, 19, 20, 21, 22, 23, 24, 129, 138, 147, 156, 165, 174, 183, 192, 1025, 1033, 1041, 1049, 1057, 1065, 1073, 1081, 1090, 1098, 1106, 1114, 1122, 1130, 1138, 1146, 1155, 1163, 1171, 1179, 1187, 1195, 1203, 1211

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

OFFSET

1,2

LINKS

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

FORMULA

a(n) = (A043022(n) + 6)/8.

MATHEMATICA

b8pQ[n_]:=With[{idn=IntegerDigits[n, 8]}, idn==Reverse[idn]&&idn[[1]]==2]; (#+6)/8&/@ Select[ Range[1000], b8pQ] (* Harvey P. Dale, Sep 20 2023 *)

CROSSREFS

Cf. A043022.

Sequence in context: A095422 A195999 A059189 * A293764 A295395 A246143

Adjacent sequences: A043063 A043064 A043065 * A043067 A043068 A043069

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved