This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A027604 n^3 + (n+1)^3 + (n+2)^3 + (n+3)^3 + (n+4)^3. 2
 100, 225, 440, 775, 1260, 1925, 2800, 3915, 5300, 6985, 9000, 11375, 14140, 17325, 20960, 25075, 29700, 34865, 40600, 46935, 53900, 61525, 69840, 78875, 88660, 99225, 110600, 122815, 135900, 149885, 164800, 180675, 197540 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..1000 P. De Geest, Palindromic Sums of Cubes of Consecutive Integers Index entries for linear recurrences with constant coefficients, signature (4,-6,4,-1). FORMULA a(n)=+4*a(n-1)-6*a(n-2)+4*a(n-3)-1*a(n-4) for n>=4 Contribution from Bruno Berselli, Jan 24 2011: (Start) G.f.: 5*(20-35*x+28*x^2-7*x^3)/(1-x)^4. a(n) = 5*n^3+30*n^2+90*n+100 = A008587(n+2)*A114949(n+2). (End) MATHEMATICA Table[n^3 + (n + 1)^3 + (n + 2)^3 + (n + 3)^3 + (n + 4)^3, {n, 0, 60}] (* Vladimir Joseph Stephan Orlovsky, Jun 27 2011 *) PROG (Sage) [n^3+(n+1)^3+(n+2)^3+(n+3)^3+(n+4)^3 for n in xrange(0, 35)] - Zerinvary Lajos, Jul 03 2008 (MAGMA) [5*n^3+30*n^2+90*n+100: n in [0..40]]; // Vincenzo Librandi, Jun 04 2011 (PARI) a(n)=5*((n+6)*n+18)*n+100 \\ Charles R Greathouse IV, Jun 28 2011 CROSSREFS Sequence in context: A188245 A122467 A185792 * A116145 A248550 A261276 Adjacent sequences:  A027601 A027602 A027603 * A027605 A027606 A027607 KEYWORD nonn,easy AUTHOR 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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.