login
a(n) = 2^(24n+7)-1.
4

%I #11 Mar 11 2024 11:33:01

%S 127,2147483647,36028797018963967,604462909807314587353087,

%T 10141204801825835211973625643007,

%U 170141183460469231731687303715884105727

%N a(n) = 2^(24n+7)-1.

%H <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (16777217,-16777216).

%F a(n) = 2^A135659(n) - 1.

%F G.f.: ( 127+16777088*x ) / ( (16777216*x-1)*(x-1) ). - R. J. Mathar, Apr 02 2012

%t Table[2^(24n + 7) - 1, {n, 0, 20}]

%o (PARI) a(n)=2^(24*n+7)-1 \\ _Charles R Greathouse IV_, Oct 16 2015

%Y Cf. A107006, A124477, A135657.

%K nonn,easy

%O 0,1

%A _Artur Jasinski_, Dec 09 2007