OFFSET
0,3
COMMENTS
Contains the numbers of form 4^k * (2 * (2^m + 1) + 1)^2, k>=0, m>=1, together with 0 and the powers of four. - Ralf Stephan, Apr 09 2014
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Feb 07 2006
STATUS
approved