A051669 a(n) = 11*2^n - 4*n - 10.

1, 8, 26, 66, 150, 322, 670, 1370, 2774, 5586, 11214, 22474, 44998, 90050, 180158, 360378, 720822, 1441714, 2883502, 5767082, 11534246, 23068578, 46137246, 92274586, 184549270, 369098642, 738197390, 1476394890, 2952789894, 5905579906, 11811159934, 23622319994, 47244640118

Offset

0,2

Links

Table of n, a(n) for n=0..32.

Index entries for linear recurrences with constant coefficients, signature (4,-5,2).

Formula

G.f.: (-1 - 4 x + x^2)/((-1 + x)^2 (-1 + 2 x)). - Harvey P. Dale, Mar 12 2023

E.g.f.: exp(x)*(11*exp(x) - 4*x - 10). - Stefano Spezia, Jul 24 2024

Mathematica

Table[ 11 2^n-4n-10, {n, 0, 30}] (* Harvey P. Dale, Mar 12 2023 *)

Crossrefs

Row sums of A051668.

Sequence in context: A050471 A088024 A296112 * A207101 A027004 A194021

Adjacent sequences: A051666 A051667 A051668 * A051670 A051671 A051672

Keyword

easy,nonn

Author

Asher Auel

Extensions

a(29)-a(32) from Stefano Spezia, Jul 24 2024

Status

approved