A129028 A129027(n)/4.

0, 27, 150, 483, 1188, 2475, 4602, 7875, 12648, 19323, 28350, 40227, 55500, 74763, 98658, 127875, 163152, 205275, 255078, 313443, 381300, 459627, 549450, 651843, 767928, 898875, 1045902, 1210275, 1393308, 1596363, 1820850, 2068227, 2340000, 2637723

Offset

0,2

Links

Table of n, a(n) for n=0..33.

Index entries for linear recurrences with constant coefficients, signature (5,-10,10,-5,1).

Formula

a(n) = (n*(5+13*n+7*n^2+2*n^3)). G.f.: -3*x*(x^3+x^2+5*x+9) / (x-1)^5. - Colin Barker, Jul 27 2013

Mathematica

LinearRecurrence[{5, -10, 10, -5, 1}, {0, 27, 150, 483, 1188}, 40] (* Harvey P. Dale, Nov 10 2024 *)

Crossrefs

Sequence in context: A180578 A301757 A192328 * A133548 A033262 A224001

Adjacent sequences: A129025 A129026 A129027 * A129029 A129030 A129031

Keyword

nonn,easy

Author

N. J. A. Sloane, May 10 2007

Status

approved