OFFSET
1,1
LINKS
Robert Israel, Table of n, a(n) for n = 1..10000
FORMULA
a(n) = floor(A094562(n)*Pi*n).
EXAMPLE
For n=5, 5*Pi = 15.707...; take the 7 from 15.(7)07... and multiply again: 7*5*Pi = 109.955... => 109.
MAPLE
f:= proc(n) local d;
d:= floor(10*n*Pi) mod 10;
floor(d*n*Pi)
end proc:
seq(f(n), n=1..1000); # Robert Israel, Dec 25 2015
CROSSREFS
KEYWORD
base,easy,nonn
AUTHOR
Matthew Jorgensen (matthew.a.jorgensen(AT)gmail.com), Oct 25 2008
STATUS
approved