OFFSET
1,2
COMMENTS
The asymptotic density of this sequence is Product_{k>=1} (1 - 1/4^k) = 0.688537... (A100221). - Amiram Eldar, Mar 21 2021
REFERENCES
C. Dumitrescu & V. Seleacu, editors, Some Notions and Questions in Number Theory, Vol. I, Erhus Publ., Glendale, 1994.
Florentin Smarandache, Properties of Numbers, 1972.
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000
C. Dumitrescu & V. Seleacu, editors, Some Notions and Questions in Number Theory, Vol. I, item 31.
PROG
(MATLAB)
A = 1:200; A(4:4:end) = 0; A = A(find(A)); A(16:16:end) = 0; A = A(find(A)); A(64:64:end) = 0; A = A(find(A))
% David Wasserman, Apr 28 2004
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Charles T. Le (charlestle(AT)yahoo.com), Mar 22 2004
EXTENSIONS
Edited by David Wasserman, Apr 28 2004
STATUS
approved