Thanks to everyone who made a donation during our annual appeal! To see the list of donors, or make a donation, see the OEIS Foundation home page.
0,2
1-bits occur only in pairs, separated from other such pairs by at least two 0-bits.
All terms satisfy both A048727(n) = 3*n and A048725(n) = 5*n.
Table of n, a(n) for n=0..40.
Index entries for sequences defined by congruent products between domains N and GF(2)[X]
a(n) = 3*A048718(n).
(PARI) is(n)=n%3==0 && !bitand(n/3, 14*n/3) \\ Charles R Greathouse IV, Oct 03 2016
Intersection of A048716 and A048717.
Sequence in context: A137711 A068032 A293341 * A115807 A322676 A102255
Adjacent sequences: A048716 A048717 A048718 * A048720 A048721 A048722
nonn,easy
Antti Karttunen, 30.3.1999
approved