|
|
A072578
|
|
In binary representation: n has the same number of 0's as the n-th prime has 1's.
|
|
5
|
|
|
8, 16, 34, 44, 64, 65, 80, 106, 116, 128, 138, 140, 174, 178, 184, 193, 196, 209, 258, 259, 260, 263, 264, 266, 272, 280, 288, 290, 314, 316, 325, 326, 327, 328, 330, 338, 344, 385, 391, 402, 449, 514, 520, 521, 528, 544, 566, 570, 574, 578, 587, 590, 597
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
In binary representation 80='1010000' has five 0's and A000040(80)=409='110011001' has five 1's: therefore 80 is a term.
|
|
MATHEMATICA
|
Select[Range[600], DigitCount[#, 2, 0]==DigitCount[Prime[#], 2, 1]&] (* Harvey P. Dale, Jan 07 2014 *)
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|