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A039916 Concatenation of the decimal digits of Pi-3.

%I A039916 #27 Mar 23 2021 12:03:30
%S A039916 1,14,141,1415,14159,141592,1415926,14159265,141592653,1415926535,
%T A039916 14159265358,141592653589,1415926535897,14159265358979,
%U A039916 141592653589793,1415926535897932,14159265358979323,141592653589793238
%N A039916 Concatenation of the decimal digits of Pi-3.
%H A039916 Kurt Van den Branden, <a href="https://web.archive.org/web/20020201235222/http://gallery.uunet.be/kurtvdb/pi.html">More digits</a>
%F A039916 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
%p A039916 A039916 := proc(n)
%p A039916     Digits := n+4 ;
%p A039916     10^n*evalf(Pi-3) ;
%p A039916     floor(%) ;
%p A039916 end proc:
%p A039916 seq(A039916(n),n=1..10) ; # _R. J. Mathar_, Oct 04 2014
%t A039916 With[{pids=Rest[RealDigits[\[Pi],10,40][[1]]]},Table[FromDigits[Take[ pids,n]],{n,20}]]  (* _Harvey P. Dale_, Mar 09 2011 *)
%Y A039916 See A000796, which is the main entry for Pi.
%K A039916 base,nonn
%O A039916 1,2
%A A039916 _Felice Russo_