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.
0, 1, 2, 4, 9, 38, 304, 2433, 38938, 2492040, 318981139, 163318343502
Offset: 1
Extensions
a(12) from Giovanni Resta, Aug 08 2019
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