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A050426 Numbers for which in base 2 the least number of digits that can be removed to leave a base 2 palindromic number (beginning with 1) is 2. 0
4, 12, 20, 22, 26, 28, 36, 38, 39, 46, 50, 57, 58, 60, 68, 70, 71, 74, 75, 79, 82, 84, 86, 87, 94, 98, 105, 106, 108, 110, 113, 117, 118, 121, 122, 124, 132, 134, 135, 138, 139, 141, 154, 155, 159, 162, 166, 167, 175, 177, 178, 179, 180 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..53.

EXAMPLE

(70 base 2) = 1000110 -> 10001.

CROSSREFS

Sequence in context: A133096 A309085 A104814 * A061820 A273541 A273215

Adjacent sequences:  A050423 A050424 A050425 * A050427 A050428 A050429

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified October 21 08:47 EDT 2019. Contains 328292 sequences. (Running on oeis4.)