OFFSET
2,4
COMMENTS
Three results are missing for a(7) in Eric Weisstein's World of Mathematics: [2, 3, 7, 43, 3263, 4051, 2558951] [2, 3, 11, 25, 29, 1097, 2753] [2, 3, 13, 25, 29, 67, 2981]. - Zhao Hui Du, Jan 24 2010
LINKS
Zhao Hui Du, all results for a(8). [Broken link]
Eric Weisstein's World of Mathematics, Znám's Problem.
CROSSREFS
KEYWORD
nonn,more,hard
AUTHOR
Eric W. Weisstein, Sep 16 2002
EXTENSIONS
a(7)-a(8) corrected by Zhao Hui Du, Jan 24 2010
STATUS
approved