This site is supported by donations to The OEIS Foundation.

 Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing. Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A127148 Q(n,6), where Q(m,k) is defined in A127080 and A127137. 2
 -120, -15, 48, 75, 72, 45, 0, -57, -120, -183, -240, -285, -312, -315, -288, -225, -120, 33, 240, 507, 840, 1245, 1728, 2295, 2952, 3705, 4560, 5523, 6600, 7797, 9120, 10575, 12168, 13905, 15792, 17835, 20040, 22413, 24960, 27687, 30600, 33705, 37008, 40515, 44232, 48165 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 REFERENCES V. van der Noort and N. J. A. Sloane, Paper in preparation, 2007. LINKS Colin Barker, Table of n, a(n) for n = 0..1000 Index entries for linear recurrences with constant coefficients, signature (4,-6,4,-1). FORMULA a(n) = n^3 -24*n^2 +128*n -120. a(n) = 4*a(n-1) -6*a(n-2) +4*a(n-3) -a(n-4), a(0)=-120, a(1)=-15, a(2)=48, a(3)=75. - Harvey P. Dale, Oct 22 2013 G.f.: (-3)*(40-155*x+204*x^2-91*x^3)/(1-x)^4. - Colin Barker, Nov 11 2014 E.g.f.: (-120 + 105*x - 21*x^2 + x^3)*exp(x). - G. C. Greubel, Aug 12 2019 MAPLE seq(n^3 -24*n^2 +128*n -120, n=0..50); # G. C. Greubel, Aug 12 2019 MATHEMATICA Table[n^3-24n^2+128n-120, {n, 0, 50}] (* or *) LinearRecurrence[{4, -6, 4, -1}, {-120, -15, 48, 75}, 50] (* Harvey P. Dale, Oct 22 2013 *) PROG (PARI) Vec(3*(91*x^3-204*x^2+155*x-40)/(x-1)^4 + O(x^50)) \\ Colin Barker, Nov 11 2014 (MAGMA) [n^3 -24*n^2 +128*n -120: n in [0..50]]; // G. C. Greubel, Aug 12 2019 (Sage) [n^3 -24*n^2 +128*n -120 for n in (0..50)] # G. C. Greubel, Aug 12 2019 (GAP) List([0..50], n-> n^3 -24*n^2 +128*n -120); # G. C. Greubel, Aug 12 2019 CROSSREFS A row of A127080. Sequence in context: A062690 A267745 A267025 * A228746 A051727 A174867 Adjacent sequences:  A127145 A127146 A127147 * A127149 A127150 A127151 KEYWORD sign,easy AUTHOR N. J. A. Sloane, Mar 24 2007 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 5 20:41 EST 2019. Contains 329777 sequences. (Running on oeis4.)