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

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,changed

Author

Clark Kimberling

Status

approved