A039916 Concatenation of the decimal digits of Pi-3.

1, 14, 141, 1415, 14159, 141592, 1415926, 14159265, 141592653, 1415926535, 14159265358, 141592653589, 1415926535897, 14159265358979, 141592653589793, 1415926535897932, 14159265358979323, 141592653589793238

Offset: 1

Author

Felice Russo

Keywords

• base
• nonn

Links

• Kurt Van den Branden, More digits

Crossrefs

See A000796, which is the main entry for Pi.

Programs

Maple

A039916 := proc(n)
    Digits := n+4 ;
    10^n*evalf(Pi-3) ;
    floor(%) ;
end proc:
seq(A039916(n),n=1..10) ; # R. J. Mathar, Oct 04 2014

Mathematica

With[{pids=Rest[RealDigits[\[Pi],10,40][[1]]]},Table[FromDigits[Take[ pids,n]],{n,20}]]  (* Harvey P. Dale, Mar 09 2011 *)

Formula

a(n) = floor((Pi-3)*10^n). G.f.: (f(x)-3*x)/(x-10*x^2) where f(x) is the G.f. of A000796. - Robert Israel, Oct 06 2014