OFFSET
1,1
COMMENTS
The records are: 4, 5, 7, 11, 19, 35, 67, ... and they occur at these indices of A014311: 11, 19, 35, 67, ... (for both, see A062709). - Michel Marcus, Jun 11 2015
The record (maximum) among the first 1000 terms is 65539. - Harvey P. Dale, May 29 2018
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
MATHEMATICA
Differences[Select[Range[500], DigitCount[#, 2, 1]==3&]] (* Harvey P. Dale, May 29 2018 *)
PROG
(JavaScript)
oo=0;
for (i=1; i<500; i++) {
s=i.toString(2);
o=0;
for (j=0; j<s.length; j++) if (s.charAt(j)==1) o++;
if (o==3) {document.write(i-oo+", "); oo=i; }
}
(PARI) lista(nn) = {my(last = 0); for (n=1, nn, if (hammingweight(n)==3, if (last, print1(n-last, ", ")); last = n; ); ); } \\ Michel Marcus, Jun 10 2015
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Jon Perry, Nov 02 2013
STATUS
approved