OFFSET
0,1
LINKS
T. Skolem, S. Chowla and D. J. Lewis, The diophantine equation 2^(n+2) - 7 = x^2 and related problems, Proc. Amer. Math. Soc., 10 (1959), 663-669.
Index entries for linear recurrences with constant coefficients, signature (3,-2).
FORMULA
From Colin Barker, May 11 2012: (Start)
a(n) = 3*a(n-1)-2*a(n-2).
G.f.: (2037-2026*x)/((1-x)*(1-2*x)). (End)
EXAMPLE
a(0) = 2^11 - 11 = 2037.
a(1) = 2^12 - 11 = 4085.
MATHEMATICA
Table[2^(n + 11) - 11, {n, 0, 30}] (* Stefan Steinerberger, Mar 06 2006 *)
PROG
(PARI) first(m)=vector(m, i, i--; 2^(i + 11) - 11) \\ Anders Hellström, Aug 26 2015
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Parthasarathy Nambi, Oct 06 2004
EXTENSIONS
More terms from Stefan Steinerberger, Mar 06 2006
STATUS
approved