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A050420 Numbers for which in base 2 the least number of digits that can be removed to leave a palindrome (possibly beginning with 0) is 1. 1
2, 4, 6, 8, 10, 11, 13, 14, 16, 18, 19, 22, 23, 25, 29, 30, 32, 34, 35, 36, 37, 41, 42, 43, 46, 47, 49, 53, 54, 55, 59, 61, 62, 64, 66, 67, 69, 76, 77, 81, 82, 83, 89, 90, 91, 94, 95, 97, 101, 102, 103, 109, 111, 115, 123, 125, 126, 128, 130 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..59.

EXAMPLE

(18 base 2) = 10010 -> 1001.

CROSSREFS

Sequence in context: A153170 A067030 A072427 * A214671 A291171 A185449

Adjacent sequences:  A050417 A050418 A050419 * A050421 A050422 A050423

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified October 23 22:15 EDT 2019. Contains 328373 sequences. (Running on oeis4.)