OFFSET

0,2

FORMULA

a(n) = 2*A005598(n) - 1. - Rémy Sigrist, Oct 11 2022

EXAMPLE

For n = 2 the only strings omitted are 02 and 20.

CROSSREFS

KEYWORD

nonn

AUTHOR

Jeffrey Shallit, Jun 06 2016

EXTENSIONS

More terms from Rémy Sigrist, Oct 11 2022

STATUS

approved