A078831 Numbers n with unique occurrence of all binary substrings representing primes in binary representation of n.

0, 1, 2, 3, 4, 5, 6, 8, 9, 11, 12, 13, 16, 17, 19, 24, 25, 32, 33, 35, 48, 49, 64, 65, 67, 96, 97, 128, 129, 131, 192, 193, 256, 257, 259, 384, 385, 512, 513, 515, 768, 769, 1024, 1025, 1027, 1536, 1537, 2048, 2049, 2051, 3072, 3073, 4096, 4097, 4099, 6144, 6145

Offset

1,3

Comments

A078826(a(n)) = A078827(a(n)); A078830 is a subsequence.

Links

Ray Chandler, Table of n, a(n) for n = 1..110

Example

n=12 -> '1100' contains two substrings representing distinct primes: '10'=2 and '11'=3, therefore 12 is a term.

Crossrefs

Cf. A078826, A078827, A078830, A007088.

Sequence in context: A067314 A066022 A052047 * A031177 A164119 A308017

Adjacent sequences: A078828 A078829 A078830 * A078832 A078833 A078834

Keyword

nonn,base

Author

Reinhard Zumkeller, Dec 08 2002

Extensions

Extended by Ray Chandler, Nov 03 2008

Status

approved