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A309340 a(n) is the least nonnegative number whose binary digits do not appear in order (not necessarily consecutively) in the concatenation of the binary representations of all previous terms. 1
0, 1, 2, 4, 9, 38, 304, 2433, 38938, 2492040, 318981139, 163318343502 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

This sequence is a variant of A118248.

a(13) > 4.5*10^12. - Giovanni Resta, Aug 08 2019

LINKS

Table of n, a(n) for n=1..12.

CROSSREFS

See A308540 for the decimal variant.

Cf. A118248.

Sequence in context: A242986 A327057 A151891 * A005204 A204428 A162111

Adjacent sequences:  A309337 A309338 A309339 * A309341 A309342 A309343

KEYWORD

nonn,base,hard,more

AUTHOR

Rémy Sigrist, Jul 24 2019

EXTENSIONS

a(12) from Giovanni Resta, Aug 08 2019

STATUS

approved

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Last modified May 25 17:53 EDT 2020. Contains 334595 sequences. (Running on oeis4.)