A060195 a(n) = 8^(n-1)*(2^n-1).

1, 24, 448, 7680, 126976, 2064384, 33292288, 534773760, 8573157376, 137304735744, 2197949513728, 35175782154240, 562881233944576, 9006649498927104, 144110790029344768, 2305807824841605120

Offset

1,2

Links

Harry J. Smith, Table of n, a(n) for n = 1..100

Index entries for linear recurrences with constant coefficients, signature (24, -128).

Formula

a(1)=1, a(2)=24, a(n) = 24*a(n-1) - 128*a(n-2). - Harvey P. Dale, Oct 20 2014

Mathematica

Table[8^(n-1) (2^n-1), {n, 20}] (* or *) LinearRecurrence[{24, -128}, {1, 24}, 20] (* Harvey P. Dale, Oct 20 2014 *)

Prog

(PARI) { for (n=1, 100, write("b060195.txt", n, " ", 8^(n - 1)*(2^n - 1)); ) } \\ Harry J. Smith, Jul 02 2009

Crossrefs

Sequence in context: A006260 A187625 A024303 * A114201 A263476 A263470

Adjacent sequences: A060192 A060193 A060194 * A060196 A060197 A060198

Keyword

nonn,easy

Author

Manish Kumar Gupta (M.Gupta(AT)math.canterbury.ac.nz), Mar 21 2001

Extensions

More terms from Jason Earls and Larry Reeves (larryr(AT)acm.org), Mar 21 2001

Status

approved