id:A078829 - OEIS Search Results

Search: id:A078829

Displaying 1-1 of 1 results found.

page 1

Numbers having exactly one prime contained as binary substring in binary representation of n.

+0
2

2, 3, 4, 8, 9, 16, 18, 32, 33, 36, 64, 65, 66, 72, 128, 129, 130, 132, 144, 256, 258, 260, 264, 265, 288, 289, 512, 513, 516, 520, 528, 530, 576, 578, 1024, 1025, 1026, 1032, 1040, 1056, 1057, 1060, 1152, 1156, 2048, 2049, 2050, 2052, 2064, 2080, 2112, 2114 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`A078826(a(n)) = 1; A078830 is a subsequence;` `for k>2 also floor(a(k)/2) belongs to the sequence.`
	EXAMPLE	`n=18 -> '10010' contains only 1 distinct binary substring which is prime: '10' (10bbb or bbb10), therefore 18 is a term.`
	CROSSREFS	`Cf. A078826, A078830, A007088.` `Sequence in context: A022999 A057844 A015922 this_sequence A045583 A045608 A068317` `Adjacent sequences: A078826 A078827 A078828 this_sequence A078830 A078831 A078832`
	KEYWORD	`nonn,base,nice`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Dec 08 2002`

page 1

Search completed in 0.002 seconds

Last modified December 21 10:15 EST 2009. Contains 171081 sequences.

AT&T Labs Research