1,2

Table of n, a(n) for n=1..19.

Index entries for linear recurrences with constant coefficients, signature (3,-2).

a(1)=1; a(2)=3; a(3)=5; a(n) = 5+2^(n-2) for n>3.

Cf. A168614.

Sequence in context: A136252 A187212 A141325 * A146905 A052282 A001993

Adjacent sequences: A248601 A248602 A248603 * A248605 A248606 A248607

nonn,easy

Aaron C. Horak, Oct 09 2014

approved