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

Author

Reinhard Zumkeller, Dec 08 2002

Keywords

• nonn
• base

Comments

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

Examples

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

Links

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

Crossrefs

Cf. A078826, A078827, A078830, A007088.

Extensions

Extended by Ray Chandler, Nov 03 2008