A032953 Numbers whose base-3 representation Sum_{i=0..m} d(i)*3^(m-i) has even d(i) for all odd i.

1, 2, 3, 5, 6, 8, 9, 10, 11, 15, 16, 17, 18, 19, 20, 24, 25, 26, 27, 29, 30, 32, 33, 35, 45, 47, 48, 50, 51, 53, 54, 56, 57, 59, 60, 62, 72, 74, 75, 77, 78, 80, 81, 82, 83, 87, 88, 89, 90, 91, 92, 96, 97, 98, 99, 100, 101, 105, 106, 107, 135

Offset

1,2

Comments

The i's are indexed at zero. - Harvey P. Dale, Aug 03 2021

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Mathematica

Select[Range[150], AllTrue[Take[IntegerDigits[#, 3], {2, -1, 2}], EvenQ]&] (* Harvey P. Dale, Aug 03 2021 *)

Crossrefs

Sequence in context: A026359 A367917 A367908 * A270813 A247431 A039033

Adjacent sequences: A032950 A032951 A032952 * A032954 A032955 A032956

Keyword

nonn,base

Author

Clark Kimberling

Extensions

Definition corrected by Sean A. Irvine, Nov 17 2020

Status

approved