OFFSET
0,2
COMMENTS
EXAMPLE
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
Alex Ratushnyak, Jan 24 2018
EXTENSIONS
a(7) from Alois P. Heinz, Jan 25 2018
a(6) inserted by Chai Wah Wu, Jan 26 2018
a(8) from Silvester Resnik, May 18 2018
STATUS
approved