OFFSET
1,4
FORMULA
a(n) = round(n*sqrt(n) + 1 - prime(n)).
EXAMPLE
a(3) = round(3*sqrt(3) + 1 - prime(3)) = round(5.196... + 1 - 5) = round(1.196...) = 1.
CROSSREFS
KEYWORD
nonn
AUTHOR
Werner D. Sand, Sep 26 2002
STATUS
approved